• county
  • FIPS 17179
  • Largest town: Pekin

Tazewell County, Illinois

Tazewell County had 129,821 residents in the Census Vintage 2024 estimate, on 646.5 square miles of land. It ranks 16th of 102 in Illinois by population and 29th by land area.

Population
129,821
#16 of 102 in Illinois · #511 in US
Area
646.5 sq mi
#29 of 102 in Illinois · #1,466 in US
Density
201 / sq mi
#15 of 102 in Illinois · #562 in US
Median household income
$73,659
#24 of 102 in Illinois · #749 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Tazewell County within Illinois. Pin: Springfield.

Measure from here

Tools and pages that start from Tazewell County

Tazewell County population, land area and income

Tazewell County had 129,821 residents in the Census Vintage 2024 estimate, on 646.5 square miles of land. It ranks 16th of 102 in Illinois by population and 29th by land area. That works out to 200.8 people per square mile, 2.1 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Illinois has 24,447 residents, so Tazewell County is 5.3 times that size.

Its SAIPE 2023 median household income of $73,659 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

129,821

3144th1st

511th of 3,144 (US)

Land area

646 sq mi

3144th1st

1466th of 3,144 (US)

Density

200.8 / sq mi

3144th1st

562nd of 3,144 (US)

Median household income

$73,659

3143rd1st

749th of 3,143 (US)

Rank within Illinois (102)

Population

129,821

102nd1st

16th of 102 (IL)

Land area

646 sq mi

102nd1st

29th of 102 (IL)

Density

200.8 / sq mi

102nd1st

15th of 102 (IL)

Median household income

$73,659

102nd1st

24th of 102 (IL)

How Tazewell County's population changed since 2020

Tazewell County lost 1,475 residents between the July 2020 and July 2024 estimates, a drop of 1.1%. That ranks 34th of 102 in Illinois for growth. The median Illinois county changed by -1.7%, and the state as a whole by -0.7%.

Since the April 2020 estimates base, Tazewell County recorded 5,238 births and 6,985 deaths, a natural change of -1,747. Net international migration added +236 and net domestic migration, people moving to or from other US counties, came to -202. The largest single component was natural change, which removed 1,747 people.

131.3k2020130.6k2021129.9k2022129.8k2023129.8k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
5,238
Deaths
6,985
Net international migration
+236
Net domestic migration
-202
Change, July 2023 to July 2024
-14

Where Tazewell County is

The Census internal point of Tazewell County is at 40.508100, -89.516300. It sits in UTM zone 16N. The map shades Illinois's 102 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Tazewell County outlined. Dots are towns of 1,000+ people with residents in it.

Piatt County: -0.3%Hamilton County: -2.2%Williamson County: -0.1%Edgar County: -2.4%Macoupin County: -2.3%Marshall County: -1.3%Putnam County: +0.0%Richland County: -2.8%Washington County: -1.4%Lee County: -1.5%Douglas County: +0.2%Cook County: -1.6%Effingham County: -0.3%Edwards County: -3.6%Cass County: -2.0%Clay County: -3.4%Knox County: -2.2%LaSalle County: -0.9%Cumberland County: -1.3%Warren County: -3.7%Moultrie County: -0.9%Menard County: -2.5%Fayette County: -1.5%Boone County: -0.0%Lawrence County: -3.2%Marion County: -3.2%Champaign County: +3.0%Clark County: -2.4%Ford County: -0.4%Wayne County: -1.4%Logan County: -1.4%Grundy County: +2.5%Jasper County: -1.8%Crawford County: -1.3%McDonough County: -1.7%Clinton County: +0.5%Perry County: -3.0%Montgomery County: -2.2%Henry County: -2.0%Livingston County: -1.2%Scott County: -3.8%Alexander County: -11.2%Bureau County: -2.2%Brown County: +1.1%Mason County: -3.9%Calhoun County: -4.1%Greene County: -4.3%Coles County: -1.4%Kendall County: +8.2%Lake County: +0.7%Mercer County: -2.2%St. Clair County: -2.3%Wabash County: -3.0%Bond County: -1.7%DuPage County: +0.6%Gallatin County: -5.2%Stephenson County: -3.3%McHenry County: +1.9%White County: -3.0%Saline County: -3.9%Christian County: -2.2%Sangamon County: -1.0%Massac County: -3.6%Macon County: -2.9%Johnson County: -0.0%Jo Daviess County: -2.6%Peoria County: -1.0%DeKalb County: +1.0%Pope County: -1.5%De Witt County: -0.9%Schuyler County: -1.7%Fulton County: -3.1%Ogle County: -0.8%Jersey County: -1.6%Iroquois County: -3.3%Kankakee County: -0.9%Rock Island County: -1.1%Pulaski County: -5.8%Kane County: +0.9%Union County: -2.4%Whiteside County: -1.7%Woodford County: -0.3%Carroll County: -1.5%Adams County: -2.3%Hardin County: -2.6%Madison County: -1.0%Hancock County: -3.1%Monroe County: +0.0%Tazewell County: -1.1%Jackson County: -0.1%Vermilion County: -3.9%Randolph County: -0.6%McLean County: +0.5%Morgan County: -2.6%Shelby County: -1.7%Will County: +1.7%Winnebago County: -0.4%Jefferson County: -2.4%Stark County: -2.2%Henderson County: -4.5%Pike County: -2.6%Franklin County: -1.8%
Change 2020 to 2024
  1. < -3.0%
  2. < -2.2%
  3. < -1.4%
  4. < -0.3%
  5. ≥ -0.3%
no data

Orange pin: Tazewell County internal point. Dark pin: Springfield.

Internal point

Decimal
40.508100, -89.516300
DMS
40°30'29.16"N 89°30'58.68"W
UTM
16N 286799.0E 4487195.9N
Geohash
dp0q7n20z
Plus code
86GGGF5M+6F

Towns in Tazewell County

11 incorporated places of 1,000+ people have residents in Tazewell County, 102,237 people together, or 79% of the county. Each figure counts only the part of the town inside Tazewell County; towns marked "part" extend into another county. The largest is Pekin with 31,266.

  1. 01Pekin31,266
  2. 02East Peoria22,024
  3. 03Morton17,557
  4. 04Washington15,857
  5. 05Creve Coeur4,832
  6. 06Marquette Heights2,485
  7. 07Tremont2,247
  8. 08Mackinaw1,848
  9. 09Delavan1,545
  10. 10North Pekin1,439
  11. 11Minier1,137
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Tazewell County

The Census 2024 county adjacency file lists 6 neighbors for Tazewell County. The most populous is Peoria County, IL, with 179,630 residents. Distances run between Census internal points in a straight line.

Distance to Springfield and the nearest big city

Springfield is 50.7 miles S of Tazewell County's internal point in a straight line. The nearest place of 100,000 or more is Peoria, IL (population 111,696), 17.6 miles away. The nearest place of 10,000 or more is Pekin, IL (population 31,266), 7.1 miles away.

Tazewell County FIPS code

The FIPS code of Tazewell County is 17179: state code 17 for Illinois plus county code 179. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $73,659.

Questions people ask

What is the population of Tazewell County, Illinois?

The Census Vintage 2024 estimate for July 1, 2024 is 129,821. That is down 1,475 people (1.1%) from the July 2020 estimate of 131,296.

What is the FIPS code of Tazewell County?

17179. The first two digits (17) are Illinois; the last three (179) identify the county.

What is the largest town in Tazewell County?

Pekin, with 31,266 residents inside Tazewell County in 2024.

Which counties border Tazewell County?

6 county-equivalents border it in the Census 2024 adjacency file: Peoria County, IL; McLean County, IL; Woodford County, IL; Fulton County, IL; Logan County, IL; Mason County, IL.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.