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Best IT Consultants in Lake Forest, IL (2026)

448 IT consultants ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Lake Forest: The MacMentor - Apple Computer, Mac & iPhone Services, IFR Score 60/100; 5.0★ from 70 Google reviews.

  2. 28

    Most-reviewed: DPC Computer repair, 630 Google reviews at 4.9★, the most of 448 ranked; ranked #28.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

448 Lake Forest IT consultants are ranked here by IFR Score, from nine published factors. 151 open Saturdays and 94 open Sundays, based on posted hours. The median Google rating is 5.0★ across 448 rated IT firms.

Top 10 IT consultants in Lake Forest at a glance

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Top 10 IT consultants in Lake Forest at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1The MacMentor - Apple Computer, Mac & iPhone Services605.0★ (70)Highland Park, 5 mi away—Overall
2Corporate Technologies604.8★ (32)Chicago, 28 mi awaySat · Sun · Evenings—
3Creative Tech594.2★ (21)Skokie, 18 mi awaySat · Sun · Evenings—
4K2 Services594.7★ (24)Chicago, 28 mi awaySat · Sun · Evenings—
5Lirsen595.0★ (21)Libertyville, 19 mi awaySat · Sun—
6Valexity Technologies594.8★ (18)Hanover Park, 27 mi awaySat · Sun · Evenings—
7RIA WorkSpace595.0★ (61)Chicago, 19 mi away——
8Source Networks, Inc.584.9★ (20)Des Plaines, 15 mi away——
9InhouseCIO585.0★ (42)Chicago, 19 mi away——
10Digital Ninja Consulting585.0★ (64)Chicago, 28 mi away——

The 448 best IT consultants in Lake Forest, ranked

Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

  1. Ranked #1 in Lake Forest

    Based in Highland Park, 5 mi away

    60/100IFR Score

    Ranked #1 because of its Google rating and service focus: 5.0★ from 70 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 70 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    1450 Park Ave W Ste B, Highland Park, IL 60035
  2. Based in Chicago, 28 mi away

    60/100IFR Score

    Ranked #2 because of its Google rating and service focus: 4.8★ from 32 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 32 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    641 W Lake St #300, Chicago, IL 60661
  3. Based in Skokie, 18 mi away

    59/100IFR Score

    Ranked #3 because of its Google rating and service focus: 4.2★ from 21 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.2★ from 21 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    3505 W Howard St, Skokie, IL 60076
  4. Based in Chicago, 28 mi away

    59/100IFR Score

    Ranked #4 because of its Google rating and service focus: 4.7★ from 24 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 24 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    135 S LaSalle St Ste 3100, Chicago, IL 60603
  5. Based in Libertyville, 19 mi away

    59/100IFR Score

    Ranked #5 because of its Google rating and service focus: 5.0★ from 21 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 21 Google reviews
    Hours
    Mon–Sun 9 AM–5 PM
  6. Based in Hanover Park, 27 mi away

    59/100IFR Score

    Ranked #6 because of its Google rating and service focus: 4.8★ from 18 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 18 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    3855 County Farm Rd, Hanover Park, IL 60133
  7. Based in Chicago, 19 mi away

    59/100IFR Score

    Ranked #7 because of its Google rating and service focus: 5.0★ from 61 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 61 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    8770 W Bryn Mawr Ave #1300, Chicago, IL 60631
  8. Based in Des Plaines, 15 mi away

    58/100IFR Score

    Ranked #8 because of its Google rating and service focus: 4.9★ from 20 Google reviews, listed on Google as “Computer consultant”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 4.9★ from 20 Google reviews
    Address
    825 Hollywood Ave, Des Plaines, IL 60016
  9. Based in Chicago, 19 mi away

    58/100IFR Score

    Ranked #9 because of its Google rating and service focus: 5.0★ from 42 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 42 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    8770 W Bryn Mawr Ave Ste 1300 suite 1300, Chicago, IL 60631
  10. Based in Chicago, 28 mi away

    58/100IFR Score

    Ranked #10 because of its Google rating and service focus: 5.0★ from 64 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 64 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    203 N La Salle Dr #2100, Chicago, IL 60601
  11. Based in Schaumburg, 22 mi away

    57/100IFR Score

    Ranked #11 because of its Google rating and service focus: 5.0★ from 8 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 8 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    902 Morse Ave, Schaumburg, IL 60193
  12. Based in Evanston, 16 mi away

    57/100IFR Score

    Ranked #14 because of its Google rating and service focus: 4.6★ from 21 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 21 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat 10 AM–3 PM · Sun closed
    Address
    1880 Oak Ave Ste 301, Evanston, IL 60201
  13. Based in Buffalo Grove, 8 mi away

    57/100IFR Score

    Ranked #15 because of its Google rating and service focus: 4.7★ from 22 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 22 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    850 Asbury Dr, Buffalo Grove, IL 60089
  14. Based in Chicago, 18 mi away

    56/100IFR Score

    Ranked #16 because of its Google rating and review volume: 4.8★ from 149 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 149 Google reviews
    Hours
    Mon–Fri 12 AM–12 AM · Sat–Sun 10 AM–6 PM
    Address
    6221 N Niagara Ave Unit 408, Chicago, IL 60631
  15. Based in Naperville, 37 mi away

    56/100IFR Score

    Ranked #17 because of its Google rating and service focus: 4.7★ from 83 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 83 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1751 W Diehl Rd #185, Naperville, IL 60563
  16. Based in North Aurora, 41 mi away

    56/100IFR Score

    Ranked #20 because of its Google rating and service focus: 5.0★ from 11 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 11 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    1427 Oakland Cir, North Aurora, IL 60542
  17. Based in Chicago, 25 mi away

    56/100IFR Score

    Ranked #21 because of its Google rating and service focus: 5.0★ from 31 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 31 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1890 N Milwaukee Ave, Chicago, IL 60647
  18. Based in Bartlett, 28 mi away

    56/100IFR Score

    Ranked #22 because of its Google rating and service focus: 5.0★ from 10 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 10 Google reviews
    Hours
    Mon 8 AM–8 PM · Tue–Wed 9 AM–8 PM · Thu 8 AM–8 PM · Fri 8 AM–6 PM · Sat–Sun 9 AM–3 PM
  19. Based in Buffalo Grove, 4 mi away

    56/100IFR Score

    Ranked #23 because of its Google rating and service focus: 4.6★ from 15 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 15 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2801 Lakeside Dr Ste 125, Bannockburn, IL 60015
  20. Based in Cary, 21 mi away

    56/100IFR Score

    Ranked #24 because of its Google rating and review volume: 4.9★ from 363 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 363 Google reviews
    Hours
    Mon 9 AM–5 PM · Tue 9 AM–6 PM · Wed 9 AM–5 PM · Thu 9 AM–6 PM · Fri 9 AM–5 PM · Sat 9 AM–12 PM · Sun closed
    Address
    115 E Main St, Cary, IL 60013
  21. Based in Palatine, 15 mi away

    56/100IFR Score

    Ranked #25 because of its Google rating and service focus: 4.8★ from 17 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 17 Google reviews
    Hours
    Mon–Fri 7 AM–8 PM · Sat–Sun closed
    Address
    1228 W Northwest Hwy, Palatine, IL 60067

IT consultants ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in IFR Score order; each links to its profile. We publish the top 50 of 448 ranked IT consultants here; the rest are on their profiles.

IT consultants in Lake Forest, ranks 26 to 50
RankBusinessIFR ScoreGoogle ratingDistance
26MNJ Technologies564.2★ (18)8 mi
27Lebowitz IT Services LLC565.0★ (11)19 mi
28DPC Computer repair554.9★ (630)36 mi
29Network Data Systems554.8★ (9)19 mi
30Cellphone PC Fix (Repair, Buy, Sell and Trade)554.5★ (436)26 mi
31Corporate Technologies | Naperville Managed IT Services Company555.0★ (6)37 mi
32Absolute Computer Systems554.8★ (191)22 mi
33MyNew Technologies555.0★ (30)26 mi
34Nerd Rangers555.0★ (436)37 mi
35Insight Enterprises, Inc.554.0★ (73)27 mi
36Everactive Solutions, Inc.555.0★ (4)8 mi
37USITplus Business Solutions554.7★ (17)34 mi
38GO Technology Group555.0★ (22)27 mi
39VT Services, Inc553.4★ (86)10 mi
40One Stop IT555.0★ (8)8 mi
41Saber-Toothed Computing554.7★ (3)28 mi
42SafePoint IT545.0★ (244)15 mi
43Genuity545.0★ (72)28 mi
44LeadingIT545.0★ (74)28 mi
45Brongus544.7★ (12)16 mi
46CyberVenger IT Compliance & Cybersecurity545.0★ (12)21 mi
47Prescient Solutions545.0★ (9)17 mi
48Chat Tech Solutions544.8★ (14)22 mi
49Gary Kravitz Consulting545.0★ (7)9 mi
50XL.net545.0★ (66)28 mi

Also serving Lake Forest

20 more IT consultants within 50 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.

Unranked IT consultants serving Lake Forest
BusinessGoogle ratingDistance
Absolute Solutions Unlimited5.0★ (2)16 mi
AK Information Technologies, Inc.3.0★ (2)17 mi
Allie Tele-Com Inc.5.0★ (2)9 mi
American IT Resource Group1.0★ (2)18 mi
Clear Corp Schaumburg -IT Support5.0★ (2)17 mi
CNT Tech5.0★ (2)17 mi
CompuOne | IT Services5.0★ (2)17 mi
Ezfixs IncIn Lake Forest
Frontier Networks LLC.5.0★ (2)3 mi
GreenmanIT, Inc.5.0★ (2)14 mi
Impact Networking4.2★ (21)In Lake Forest
Indigo Systems & Technology Consulting Inc.3.0★ (2)17 mi
Lake Forest I.T. LLC5.0★ (1)In Lake Forest
MSI Consulting5.0★ (2)16 mi
Research Support Services Inc.5.0★ (2)17 mi
Solution Specialties Inc4.0★ (2)16 mi
Statum Consulting5.0★ (2)16 mi
Stratum Access Technologies, Inc.5.0★ (2)6 mi
Transworld Systems2.4★ (23)In Lake Forest
TURNkey4.0★ (2)9 mi

How we ranked Lake Forest IT consultants

We scored 448 Lake Forest IT consultants on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.

Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn Lake Forest data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose an IT consultant

  1. Ask whether the consultant earns commissions or referral fees on products they recommend.
  2. Check experience with projects like yours, and ask for a sample deliverable.
  3. Agree the deliverables, timeline and price for each phase before work starts.
  4. Ask for two or three references from clients of your size and industry, and call them.
  5. Get the scope, response times and price in writing before you sign, including how you leave and get your data back.

Questions to ask an IT consultant

  • Do you receive commissions from any vendor you might recommend?
  • What will we receive at the end of the project?
  • Who will do the work, and what similar projects have they completed?
  • Do you bill hourly, per project or on retainer?
  • Will you work alongside our current IT provider?

Terms explained

MSP (managed service provider)
A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
Co-managed IT
An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
Break-fix
IT support paid per incident or per hour, with no monthly agreement.
SLA (service-level agreement)
The contract terms for response and resolution times, uptime and support hours.
Help desk
The support line staff call or email for IT problems.
RMM
Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
vCIO
A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
MSSP
A managed security service provider: a firm that monitors and manages security tools around the clock.
EDR / MDR
Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
MFA
Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
Penetration test
An authorised, simulated attack on your systems to find weaknesses before criminals do.
SOC 2
An independent auditor’s report (AICPA standard) on a service provider’s security controls.

IT consultants in Lake Forest: frequently asked questions

Who is the best IT consultant in Lake Forest?

By IFR Score, the highest-ranked IT consultant in Lake Forest, IL is The MacMentor - Apple Computer, Mac & iPhone Services with an IFR Score of 60/100. It has 5.0★ from 70 Google reviews. Corporate Technologies (#2) and Creative Tech (#3) follow. We ranked 448 IT consultants on nine factors, last updated November 9, 2026.

How many IT consultants are there in Lake Forest?

ITFirmsRanked ranks 448 IT consultants serving Lake Forest, IL. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.

Which IT consultants in Lake Forest work on weekends?

151 of 448 ranked IT consultants post Saturday hours and 94 post Sunday hours. The highest-ranked open Saturdays are Corporate Technologies (#2), Creative Tech (#3) and K2 Services (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do Lake Forest IT consultants have?

The median Google rating among 448 rated IT consultants in Lake Forest is 5.0★, with a median of 12 reviews. DPC Computer repair has the most, 630 reviews, and ranks #28. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ITFirmsRanked rank IT consultants?

Each IT consultant gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.

Do IT consultants outside Lake Forest count in this ranking?

Yes, if they are within 50 mi of the Lake Forest city center, our service radius for IT consultants. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.

Can IT consultants pay to rank higher on ITFirmsRanked?

No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.

What does an IT consultant do?

IT consultants advise on technology plans and projects: system selection, cloud migrations, budgets, security and compliance programmes, often as a part-time or virtual CIO.

How are it consultants in Lake Forest ranked?

By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does IT consulting, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.

When does a business need an IT consultant rather than an IT provider?

For decisions and projects rather than day-to-day support: choosing a new system, planning a cloud move, setting an IT budget, preparing for an audit or reviewing an existing IT provider.

How do IT consultants charge?

By the hour, by the project or on a monthly retainer for ongoing virtual CIO work. Ask for a fixed price or a capped estimate on defined projects.

Update log for Lake Forest

  1. November 2026: IFR Scores recalculated for 448 IT consultants serving Lake Forest.
  2. November 2026: 1 duplicate listing merged.