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Dentists in Illinois

How many dentists 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: General & family dentists · Orthodontists · Oral surgeons · Other dental specialists. Counted together because official statistics use one 621210 code.

State verdict (covered counties): Above the U.S. rate — 120% of the U.S. rate

Counties covered

in Illinois

Dentists

5,096

establishments (2023)

Per 10,000 present

4.0

residents + 0.5×workers

U.S. average

3.4

per 10,000 present

State index

120%

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 dentists and the people present, not foot traffic, income, rent, or whether locals want more.

Counties in Illinois

City	County	Dentists	Residents	Workers	Per 10k	Index	Verdict
Downers Grove	DuPage County	745–761	961,096	599,180	5.9	176–177%	High density
North Chicago	Lake County	432–454	747,565	351,156	4.7	140–145%	Above average
Chicago	Cook County	2,630–2,738	5,132,257	2,445,383	4.1	123–127%	Above average
Elgin	Kane County	234–256	506,642	177,908	3.9	117–125%	Above average
Bolingbrook	Will County	305–323	697,966	252,149	3.7	110–116%	Above average
Crystal Lake	McHenry County	132–146	328,030	92,834	3.5	105–115%	Above average
Springfield	Sangamon County	74–132	194,839	70,812	3.2	96–150%	Range spans bands
Edwardsville	Madison County	98–134	268,375	94,295	3.1	93–127%	Range spans bands
Rockford	Winnebago County	97–133	284,853	110,619	2.9	85–106%	Range spans bands
Oswego	Kendall County	37–45	121,968	28,643	2.7	81–99%	Below average
Normal	McLean County	55–105	173,337	61,936	2.7	80–145%	Range spans bands
Moline	Rock Island County	46–80	144,245	64,178	2.6	78–122%	Range spans bands
Peoria	Peoria County	56–118	179,934	81,431	2.5	76–135%	Range spans bands
Champaign	Champaign County	60–110	208,555	71,922	2.5	73–127%	Range spans bands
East Peoria	Tazewell County	36–60	132,535	43,220	2.3	70–112%	Range spans bands
O Fallon	St. Clair County	59–109	247,743	71,801	2.1	62–108%	Range spans bands

Scroll the table sideways to see all columns.

Lowest vs. highest measured density

Fewest competitors per capita

176%

140%

123%

117%

110%

105%

96%

93%

Most competitors per capita

62%

70%

73%

76%

78%

80%

81%

85%

Low measured density is not evidence of opportunity. A county with few dentists 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.