• county
  • FIPS 17071
  • Largest town: Oquawka

Henderson County, Illinois

Henderson County had 6,048 residents in the Census Vintage 2024 estimate, on 378.8 square miles of land. It ranks 92nd of 102 in Illinois by population and 78th by land area.

Population
6,048
#92 of 102 in Illinois · #2,726 in US
Area
378.8 sq mi
#78 of 102 in Illinois · #2,608 in US
Density
16 / sq mi
#99 of 102 in Illinois · #2,362 in US
Median household income
$62,610
#71 of 102 in Illinois · #1,592 in US

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

Henderson County within Illinois. Pin: Springfield.

Measure from here

Tools and pages that start from Henderson County

Henderson County population, land area and income

Henderson County had 6,048 residents in the Census Vintage 2024 estimate, on 378.8 square miles of land. It ranks 92nd of 102 in Illinois by population and 78th by land area. That works out to 16.0 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Illinois has 24,447 residents, so Henderson County has 25% of the typical county's population.

Its SAIPE 2023 median household income of $62,610 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

6,048

3144th1st

2726th of 3,144 (US)

Land area

379 sq mi

3144th1st

2608th of 3,144 (US)

Density

16.0 / sq mi

3144th1st

2362nd of 3,144 (US)

Median household income

$62,610

3143rd1st

1592nd of 3,143 (US)

Rank within Illinois (102)

Population

6,048

102nd1st

92nd of 102 (IL)

Land area

379 sq mi

102nd1st

78th of 102 (IL)

Density

16.0 / sq mi

102nd1st

99th of 102 (IL)

Median household income

$62,610

102nd1st

71st of 102 (IL)

How Henderson County's population changed since 2020

Henderson County lost 287 residents between the July 2020 and July 2024 estimates, a drop of 4.5%. That ranks 99th 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, Henderson County recorded 241 births and 394 deaths, a natural change of -153. Net international migration added +6 and net domestic migration, people moving to or from other US counties, came to -191. The largest single component was domestic migration, which removed 191 people.

6,33520206,30920216,16820226,10520236,0482024
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
241
Deaths
394
Net international migration
+6
Net domestic migration
-191
Change, July 2023 to July 2024
-57

Where Henderson County is

The Census internal point of Henderson County is at 40.814500, -90.941200. It sits in UTM zone 15N. The map shades Illinois's 102 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Henderson 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: Henderson County internal point. Dark pin: Springfield.

Internal point

Decimal
40.814500, -90.941200
DMS
40°48'52.20"N 90°56'28.32"W
UTM
15N 673638.3E 4520204.7N
Geohash
9zr24w49s
Plus code
86GFR375+RG

Towns in Henderson County

One incorporated place of 1,000+ people has residents in Henderson County, 1,074 people together, or 18% of the county. Each figure counts only the part of the town inside Henderson County; towns marked "part" extend into another county. The largest is Oquawka with 1,074.

  1. 01Oquawka1,074
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Henderson County

The Census 2024 county adjacency file lists 6 neighbors for Henderson County, including 2 across a state line. The most populous is Des Moines County, IA, with 38,411 residents. Distances run between Census internal points in a straight line.

Distance to Springfield and the nearest big city

Springfield is 98.6 miles SE of Henderson County's internal point in a straight line. The nearest place of 100,000 or more is Davenport, IA (population 100,938), 54.2 miles away. The nearest place of 10,000 or more is Burlington, IA (population 23,637), 9.6 miles away.

Henderson County FIPS code

The FIPS code of Henderson County is 17071: state code 17 for Illinois plus county code 071. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $62,610.

Questions people ask

What is the population of Henderson County, Illinois?

The Census Vintage 2024 estimate for July 1, 2024 is 6,048. That is down 287 people (4.5%) from the July 2020 estimate of 6,335.

What is the FIPS code of Henderson County?

17071. The first two digits (17) are Illinois; the last three (071) identify the county.

What is the largest town in Henderson County?

Oquawka, with 1,074 residents inside Henderson County in 2024.

Which counties border Henderson County?

6 county-equivalents border it in the Census 2024 adjacency file: Des Moines County, IA; Lee County, IA; McDonough County, IL; Hancock County, IL; Warren County, IL; Mercer 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.