certification.app/workforce data/Illinois
June 2026 snapshot · published August 2026

The Illinois Mental Health Workforce

Illinois has 56,193 active mental-health providers registered at practice addresses in the state, or 441.8 per 100,000 residents. That ranks 25 of 51 nationally, against a US average of 433.5.

56,193

active providers

441.8

per 100,000 residents

#25

of 51 jurisdictions by density

Key findings

  • Illinois registers 441.8 active providers per 100,000 residents. That ranks 25 of 51 jurisdictions, above the national 433.5. #
  • Lee County has the state's highest registered density (1018.7 per 100k); 7 of Illinois's 102 counties have fewer than 3 registered providers. #
  • Counselors are the largest group at 44.8% of Illinois's registered workforce (US: 43.9%). #
  • 3,889 providers with a Illinois practice address first entered the NPI registry in 2025, versus 2,875 in 2019. These are registry entries, not licenses issued. #
  • 63% of Illinois providers share a registered practice location with six or more in-scope providers. #

Providers per 100,000 by county

Providers are allocated to counties from their practice ZIP code. For 7 counties with under 3 allocated providers or under 1,000 residents, we show the count but no per-100k rate, because numbers that small don't make a reliable rate. We also withhold the rate for 3 counties (Coles, Franklin and Iroquois), where a single practice address holds at least half the providers registered there — typically a regional employer that enrols its whole clinical staff at one headquarters, which inflates that county and thins its neighbours. The same values appear in the table.

providers / 100k26.5–103.1103.1–180.3180.3–271.1271.1–499.7499.7+no rate published
CountyPopulationProvidersPer 100k
Cook County5,194,62527,022520.2
DuPage County934,2985,286565.7
Lake County719,3393,257452.7
Kane County525,7572,661506.1
McHenry County317,7512,000629.4
Will County712,2531,915268.8
Champaign County209,9721,233587.4
Winnebago County283,674883311.3
Madison County263,110879334.1
McLean County171,419836487.7
Sangamon County194,170758390.4
Peoria County178,553674377.5
St. Clair County250,708640255.2
DeKalb County101,835576565.9
Rock Island County141,869539379.7
Williamson County67,225423629.6
Vermilion County71,259356499.7
Tazewell County130,049351269.9
Lee County32,9143351018.7
Kendall County145,470317218
Coles County46,607314n/a
Jackson County52,501298567.5
Franklin County36,916291n/a
Kankakee County105,525286271.1
Adams County64,267273424.8
Macon County99,300239240.5
LaSalle County107,773181168.1
Marion County36,382163446.8
Jefferson County36,147140387.5
Grundy County54,052130240.2
Saline County22,772129567.2
Iroquois County26,150129n/a
Johnson County13,363120897.1
Whiteside County54,121120221.4
Ogle County51,399116225
Stephenson County43,220106244.7
Knox County47,767105220.8
Effingham County34,519102294.6
Lawrence County13,79099717.7
Livingston County35,05793266.3
Richland County15,21991596.6
Cass County12,46388703.8
Ford County13,21684635.6
Monroe County34,84079225.4
Massac County13,50272534
McDonough County25,91669266.2
Perry County20,16062305.1
Union County16,65658347
Randolph County29,92151170.2
Clinton County37,12850135.3
Edgar County16,32349300.7
Morgan County32,51547144.5
Jasper County9,03247515.2
Macoupin County43,74846105.7
Crawford County18,64846246.4
Wabash County10,90743394.2
Hancock County16,80343255.5
Moultrie County14,37143298
Logan County27,18242154.6
Bureau County32,51041126.3
Jersey County21,16037176.1
Fulton County32,90134102.2
Montgomery County28,07633117.4
White County13,25031236
Boone County53,5683158.4
Bond County16,95931180.3
Henry County48,0952858.9
Clay County12,79328218.1
Alexander County4,57027590.8
Woodford County38,1112770.8
Jo Daviess County21,59427123.7
Brown County6,40125390.6
Wayne County15,88225157.4
Carroll County15,41925159
Christian County33,4432472
Piatt County16,79123138
Fayette County20,79021103.1
Washington County13,56421157.6
Pike County14,23121147.4
Shelby County20,5761991.2
Schuyler County6,65713199.6
De Witt County15,1181386.5
Warren County16,2221061.3
Douglas County19,8801048
Henderson County5,9849152.6
Menard County11,863975.4
Cumberland County10,208768.4
Mason County12,411756
Mercer County15,229639.4
Clark County15,114639.2
Marshall County11,473651.3
Pulaski County4,8206121.5
Edwards County5,898473.1
Greene County11,313326.5
Hamilton County7,859338.2
Hardin County3,5882n/a
Gallatin County4,6162n/a
Pope County3,6722n/a
Stark County5,3191n/a
Putnam County5,6191n/a
Calhoun County4,3000n/a
Scott County4,8660n/a

Provider-type mix vs the national picture

Each provider counts once under their primary taxonomy; the US share is printed beside each Illinois figure for comparison.

Counselors44.8% · 25,193 · US 43.9%
Social workers34.6% · 19,426 · US 30.4%
Psychologists10.9% · 6,147 · US 10.2%
Psychiatrists4.4% · 2,473 · US 4.6%
Psychiatric NPs2.9% · 1,646 · US 4.0%
Marriage & family therapists2.3% · 1,308 · US 6.8%

When Illinois's providers entered the registry

Active providers by NPI registry-entry year. Registry entry is not licensure. Clinicians typically register when they start billing, so this measures registrations, not the workforce itself. 2026 is a partial year.

1,2692010201420183,90120221,5662026

Practice-location size

Share of Illinois providers at single- vs multi-provider practice locations, by normalized practice address. This is a proxy; see the limitations below.

Only provider at their location21.8% · 12,268
2–5 providers at the location14.8% · 8,291
6+ providers at the location63.4% · 35,631
Location unknown0.0% · 3

Get the numbers

County-level figures for all states (including Illinois) are in the county CSV; state totals and mix are in their own files. Everything is CC BY 4.0, so cite certification.app, "US Mental Health Workforce" (June 2026 NPPES snapshot).

county-density.csv ↓state-density.csv ↓all downloads →

Use this chart

Download SVGDownload PNG
<a href="https://www.certification.app/data/mental-health-workforce"><img src="https://www.certification.app/data/mental-health-workforce/charts/il-county-density.svg" alt="Illinois mental health providers per 100,000 residents by county" width="100%" /></a>
<p style="font-size:12px">"Illinois mental health providers per 100k by county, June 2026 snapshot" by <a href="https://www.certification.app/data/mental-health-workforce">certification.app</a>, CC BY 4.0</p>

Reading these numbers

Counts are NPPES registrations at Illinois practice addresses. They are headcounts, not FTEs or license tallies. Telehealth and multi-state practice are invisible; taxonomy self-designation is not license verification; the registry lags moves and retirements. Details: methodology.

CE requirements for Illinois clinicians

Illinois LPC CE requirements →Illinois LMFT CE requirements →Illinois LCSW CE requirements →Illinois Psychologist CE requirements →
← #24 Minnesota (445.3)#25 Illinois (441.8)#26 North Dakota (435.6) →
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