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Auto repair in Illinois

How many auto repair exist per person present (residents + daytime workers) across the 16 Illinois counties we cover, by ZIP code, compared with the U.S. average. Data: Census ZBP 2023 + ACS 2024 + BLS QCEW.

Includes: Auto repair & maintenance shops · Body, paint & interior repair. Counted together because official statistics use one 811121 code.

State verdict (covered counties): Below the U.S. rate — 85% of the U.S. rate

Counties covered

in Illinois

Auto repair

925

establishments (2023)

Per 10,000 present

0.7

residents + 0.5×workers

U.S. average

0.9

per 10,000 present

State index

85%

vs. U.S.

Residents

10,329,940

in covered counties

Workers

4,617,467

jobs in covered counties

Coverage. This page aggregates only the 16 Illinois counties BizGapMap covers — not the whole state. Counts and the index reflect those counties. The aggregate index uses only ZIP cells Census published, so it is a lower bound. Density is a supply-side signal: it counts existing auto repair and the people present, not foot traffic, income, rent, or whether locals want more.

Counties in Illinois

City	County	Auto repair	Residents	Workers	Per 10k	Index	Verdict
Bolingbrook	Will County	86–118	697,966	252,149	1.0	121–163%	Range spans bands
Edwardsville	Madison County	31–73	268,375	94,295	1.0	114–267%	Range spans bands
Crystal Lake	McHenry County	36–60	328,030	92,834	1.0	111–179%	Range spans bands
Springfield	Sangamon County	20–76	194,839	70,812	0.9	100–301%	Range spans bands
O Fallon	St. Clair County	24–72	247,743	71,801	0.8	98–269%	Range spans bands
Elgin	Kane County	50–82	506,642	177,908	0.8	97–147%	Range spans bands
Downers Grove	DuPage County	104–154	961,096	599,180	0.8	95–130%	Range spans bands
Oswego	Kendall County	11–23	121,968	28,643	0.8	93–195%	Range spans bands
North Chicago	Lake County	68–108	747,565	351,156	0.7	85–128%	Range spans bands
Chicago	Cook County	434–654	5,132,257	2,445,383	0.7	79–112%	Range spans bands
Rockford	Winnebago County	22–62	284,853	110,619	0.6	75–170%	Range spans bands
Champaign	Champaign County	13–71	208,555	71,922	0.5	61–307%	Range spans bands
Normal	McLean County	9–61	173,337	61,936	0.4	51–311%	Range spans bands
East Peoria	Tazewell County	6–36	132,535	43,220	0.4	45–255%	Range spans bands
Peoria	Peoria County	7–71	179,934	81,431	0.3	37–278%	Range spans bands
Moline	Rock Island County	4–42	144,245	64,178	0.2	26–223%	Range spans bands

Scroll the table sideways to see all columns.

Lowest vs. highest measured density

Fewest competitors per capita

121%

114%

111%

100%

98%

97%

95%

93%

Most competitors per capita

26%

37%

45%

51%

61%

75%

79%

85%

Low measured density is not evidence of opportunity. A county with few auto repair may simply lack foot traffic, retail space, or demand. Use the ranking to find where to look, then verify locally.

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BizGapMap — free, no-login small-business saturation reports for major U.S. counties. Built entirely from public U.S. Census, BLS, and IRS data (ZBP 2023, ACS 2024 5-year, PEP 2024, LODES, QCEW, IRS SOI). No forecasts, no revenue guesses — withheld cells are marked, and the few derived counts are labelled as estimates.