Village · Illinois
Arenzville, Illinois
Arenzville, village, in Cass County, Illinois. Arenzville had 355 residents on July 1, 2025 by the Census Bureau's estimate, down 4.8% since 2020; the 2020 Census counted 367 and the ACS 2020-2024 5-year estimates put it at 342 (±74). GEOID 1701946.
Residents, July 2025 estimate
355
Census Bureau estimate (no margin published)
2020 Census count: 367 · ACS 2020-2024: 342 ±74
Median household income
$80,750
±$21,191 (90% margin)
Illinois: $83,390
Median home value
$104,700
±$13,790 (90% margin)
Illinois: $263,300
Median gross rent
$900
±$396 (90% margin)
Illinois: $1,274
Where is Arenzville and what county is it in?
Arenzville is a village in Cass County, Illinois. It covers 0.8 square miles of land, 478 residents per square mile in 2020.
Arenzville lies entirely within Arenzville Township, a township with its own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Arenzville, and is it growing?
The Census Bureau estimates that 355 people lived in Arenzville on July 1, 2025, down 4.8% since 2020, a steeper fall than Illinois's (−0.8%). The 2020 Census counted 367 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 342 (±74).
| Measure | Arenzville | Cass County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 342 ±74 | 12,784 | no clear change |
| Households | 153 ±36 | 5,128 | no clear change |
| Average household size | 2.24 ±0.38 | 2.46 | no clear change |
| Housing units | 161 ±37 | 5,676 | no clear change |
Arenzville's population since 2000
From 419 in 2000 to 355 in 2025: down 15.3%. The 2000, 2010 and 2020 figures are census counts, each for Arenzville as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Arenzville?
The median resident of Arenzville is 35.8 years old; 23.4% are under 18 and 17.8% are 65 or older. The largest group is non-Hispanic white residents at 97.4%, then non-Hispanic residents of two or more races at 2.3%.
| Measure | Arenzville | Cass County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 35.8 ±4.5 | 38.3 | no clear change |
| Under 18 years | 23.4% ±5.8 pts | 24.4% | – |
| 65 years and over | 17.8% ±6.2 pts | 18.0% | – |
| Male | 47.4% ±5.4 pts | 48.7% | – |
| Hispanic or Latino (any race) | 0.3% ±1.2 pts | 22.9% | – |
| White alone, not Hispanic | 97.4% ±2.3 pts | 69.9% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±10.4 pts | 4.0% | – |
| Asian alone, not Hispanic | 0.0% ±10.4 pts | 0.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±10.4 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±10.4 pts | 0.5% | – |
| Two or more races, not Hispanic | 2.3% ±2.5 pts | 1.3% | – |
| Some other race alone, not Hispanic | 0.0% ±10.4 pts | 0.4% | – |
| Born outside the United States | 0.0% ±10.4 pts | 14.2% | – |
| Speak a language other than English at home (age 5+) | 1.6% ±1.7 pts | 22.1% | – |
| Civilian veterans (age 18+) | 4.2% ±4.1 pts | 5.8% | – |
| With a disability | 10.3% ±5.0 pts | 16.6% | – |
| No health insurance coverage | 2.4% ±3.9 pts | 7.7% | – |
| High school graduate or higher (age 25+) | 95.2% ±4.9 pts | 86.4% | – |
| Bachelor's degree or higher (age 25+) | 31.0% ±9.9 pts | 20.8% | no clear change |
| Graduate or professional degree (age 25+) | 10.5% ±5.5 pts | 6.0% | – |
| Lived in the same house a year earlier | 97.0% ±4.1 pts | 88.0% | – |
| Moved from another state in the past year | 0.0% ±10.6 pts | 1.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Arenzville earn?
Half of Arenzville's 153 households earn less than $80,750 a year (±$21,191), against $68,125 in Cass County and $83,390 in Illinois. In 2015-2019 it was $98,895 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Arenzville | Cass County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $80,750 ±$21,191 | $68,125 | no clear change |
| Mean household income | $93,308 ±$18,637 | $81,028 | – |
| Per capita income | $41,185 ±$6,213 | $32,954 | no clear change |
| People below the poverty line | 5.3% ±4.8 pts | 11.1% | – |
| Children under 18 below the poverty line | 3.8% ±5.6 pts | 11.5% | – |
| Households receiving SNAP | 4.6% ±3.4 pts | 14.7% | – |
| Households with a computer | 96.1% ±3.1 pts | 92.9% | – |
| Households with a broadband subscription | 95.4% ±3.7 pts | 86.7% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Arenzville?
Owners occupy 77.8% of Arenzville's occupied homes and renters 22.2%. The median owner-occupied home is valued at $104,700 by its owner (±$13,790). The median renter pays $900 a month including utilities.
| Measure | Arenzville | Cass County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $104,700 ±$13,790 | $97,100 | no clear change |
| Median gross rent | $900 ±$396 | $723 | no clear change |
| Renters paying 35% or more of income on rent | 3.6% ±7.3 pts | 20.2% | – |
| Median monthly owner costs, with a mortgage | $1,173 ±$154 | $1,195 | – |
| Owner-occupied homes | 77.8% ±11.2 pts | 75.9% | no clear change |
| Renter-occupied homes | 22.2% ±11.2 pts | 24.1% | – |
| Housing units | 161 ±37 | 5,676 | no clear change |
| Homeowner vacancy rate | 4.0% ±6.1 pts | 2.7% | – |
| Rental vacancy rate | 0.0% ±54.6 pts | 9.7% | – |
| Single-family detached homes | 90.1% ±5.5 pts | 80.2% | – |
| Mobile homes | 2.5% ±3.7 pts | 11.0% | – |
| Built 2020 or later | 0.0% ±20.6 pts | 0.9% | – |
| Built 2010 to 2019 | 4.3% ±7.5 pts | 1.9% | – |
| Built 1939 or earlier | 50.3% ±10.6 pts | 22.8% | – |
| Households with no vehicle | 2.6% ±2.5 pts | 4.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Arenzville work and get to work?
86.5% of Arenzville's workers drive alone. The average trip to work takes 26.9 minutes.
| Measure | Arenzville | Cass County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 68.6% ±7.4 pts | 58.5% | – |
| Unemployment rate | 1.6% ±2.3 pts | 4.2% | – |
| Drove alone to work | 86.5% ±7.1 pts | 80.0% | – |
| Carpooled | 4.3% ±4.3 pts | 11.9% | – |
| Public transportation | 0.0% ±18.2 pts | 0.0% | – |
| Walked | 1.1% ±2.1 pts | 0.9% | – |
| Worked from home | 8.1% ±5.5 pts | 5.7% | – |
| Mean travel time to work | 26.9 min ±6.2 | 21.0 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Arenzville?
No census tract lies mostly in Arenzville; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9602Cass County | 2,660 | $67,650 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Arenzville) · Census block assignment files
How does Arenzville compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Arenzville is the 14,565th-most populous of the 19,476 U.S. incorporated places that have one and the 957th-most populous of 1,294 in Illinois.
Arenzville is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 957th | 1,294 |
Arenzville's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Arenzville with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Arenzville?
27 of the 57 figures for Arenzville on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Arenzville are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Arenzville.