Village · Illinois
Andalusia, Illinois
Andalusia, village, in Rock Island County, Illinois. Andalusia had 1,175 residents on July 1, 2025 by the Census Bureau's estimate, down 1.3% since 2020; the 2020 Census counted 1,184 and the ACS 2020-2024 5-year estimates put it at 1,021 (±225). GEOID 1701426.
Residents, July 2025 estimate
1,175
Census Bureau estimate (no margin published)
2020 Census count: 1,184 · ACS 2020-2024: 1,021 ±225
Median household income
$77,222
±$20,603 (90% margin)
Illinois: $83,390
Median home value
$168,000
±$13,992 (90% margin)
Illinois: $263,300
Median gross rent
$825
±$260 (90% margin)
Illinois: $1,274
Where is Andalusia and what county is it in?
Andalusia is a village in Rock Island County, Illinois. It covers 1.2 square miles of land, 1,008 residents per square mile in 2020.
Andalusia is in the Davenport-Moline-Rock Island, IA-IL metropolitan statistical area, which takes in 4 counties (Census Bureau delineation, July 2023).
Andalusia lies entirely within Andalusia 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 Andalusia, and is it growing?
The Census Bureau estimates that 1,175 people lived in Andalusia on July 1, 2025, down 1.3% since 2020, in line with Illinois (−0.8%). The 2020 Census counted 1,184 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,021 (±225).
| Measure | Andalusia | Rock Island County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,021 ±225 | 142,757 | no clear change |
| Households | 468 ±102 | 61,733 | no clear change |
| Average household size | 2.18 ±0.19 | 2.23 | no clear change |
| Housing units | 478 ±103 | 66,759 | no clear change |
Andalusia's population since 2000
From 1,050 in 2000 to 1,175 in 2025: up 11.9%. The 2000, 2010 and 2020 figures are census counts, each for Andalusia 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 Andalusia?
The median resident of Andalusia is 50.8 years old; 16.8% are under 18 and 22.6% are 65 or older. The largest group is non-Hispanic white residents at 91.3%, then non-Hispanic residents of two or more races at 4.7%.
| Measure | Andalusia | Rock Island County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 50.8 ±5.8 | 40.3 | no clear change |
| Under 18 years | 16.8% ±6.0 pts | 22.5% | – |
| 65 years and over | 22.6% ±6.0 pts | 20.4% | – |
| Male | 51.4% ±6.0 pts | 49.5% | – |
| Hispanic or Latino (any race) | 4.0% ±3.9 pts | 14.2% | – |
| White alone, not Hispanic | 91.3% ±5.7 pts | 67.4% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±3.6 pts | 10.9% | – |
| Asian alone, not Hispanic | 0.0% ±3.6 pts | 2.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±3.6 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±3.6 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.7% ±3.5 pts | 4.4% | – |
| Some other race alone, not Hispanic | 0.0% ±3.6 pts | 0.4% | – |
| Born outside the United States | 0.8% ±0.8 pts | 8.7% | – |
| Speak a language other than English at home (age 5+) | 1.9% ±2.3 pts | 13.8% | – |
| Civilian veterans (age 18+) | 9.6% ±4.6 pts | 7.1% | – |
| With a disability | 12.6% ±4.5 pts | 15.4% | – |
| No health insurance coverage | 3.6% ±2.6 pts | 6.1% | – |
| High school graduate or higher (age 25+) | 94.6% ±3.3 pts | 90.7% | – |
| Bachelor's degree or higher (age 25+) | 17.5% ±4.2 pts | 24.7% | no clear change |
| Graduate or professional degree (age 25+) | 6.3% ±3.0 pts | 9.0% | – |
| Lived in the same house a year earlier | 91.1% ±6.8 pts | 88.3% | – |
| Moved from another state in the past year | 2.4% ±2.3 pts | 2.4% | – |
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 Andalusia earn?
Half of Andalusia's 468 households earn less than $77,222 a year (±$20,603), against $67,159 in Rock Island County and $83,390 in Illinois. In 2015-2019 it was $78,149 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Andalusia | Rock Island County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $77,222 ±$20,603 | $67,159 | no clear change |
| Mean household income | $93,590 ±$11,687 | $85,299 | – |
| Per capita income | $43,219 ±$4,653 | $36,842 | no clear change |
| People below the poverty line | 4.7% ±3.6 pts | 15.5% | – |
| Children under 18 below the poverty line | 5.6% ±9.0 pts | 23.7% | – |
| Households receiving SNAP | 6.0% ±4.5 pts | 15.9% | – |
| Households with a computer | 96.4% ±3.4 pts | 94.9% | – |
| Households with a broadband subscription | 93.2% ±4.8 pts | 90.5% | – |
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 Andalusia?
Owners occupy 86.8% of Andalusia's occupied homes and renters 13.2%. The median owner-occupied home is valued at $168,000 by its owner (±$13,992). The median renter pays $825 a month including utilities.
| Measure | Andalusia | Rock Island County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $168,000 ±$13,992 | $150,400 | no clear change |
| Median gross rent | $825 ±$260 | $889 | no clear change |
| Renters paying 35% or more of income on rent | 30.0% ±31.6 pts | 39.3% | – |
| Median monthly owner costs, with a mortgage | $1,383 ±$122 | $1,360 | – |
| Owner-occupied homes | 86.8% ±6.5 pts | 69.7% | no clear change |
| Renter-occupied homes | 13.2% ±6.5 pts | 30.3% | – |
| Housing units | 478 ±103 | 66,759 | no clear change |
| Homeowner vacancy rate | 1.9% ±3.0 pts | 0.7% | – |
| Rental vacancy rate | 0.0% ±40.5 pts | 6.4% | – |
| Single-family detached homes | 90.8% ±5.6 pts | 70.2% | – |
| Mobile homes | 0.0% ±7.5 pts | 2.7% | – |
| Built 2020 or later | 0.0% ±7.5 pts | 0.5% | – |
| Built 2010 to 2019 | 7.1% ±3.5 pts | 3.8% | – |
| Built 1939 or earlier | 8.2% ±6.0 pts | 21.9% | – |
| Households with no vehicle | 1.9% ±1.8 pts | 8.6% | – |
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 Andalusia work and get to work?
87.6% of Andalusia's workers drive alone. The average trip to work takes 22.7 minutes.
| Measure | Andalusia | Rock Island County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 62.8% ±9.0 pts | 61.2% | – |
| Unemployment rate | 2.4% ±3.5 pts | 5.6% | – |
| Drove alone to work | 87.6% ±6.7 pts | 77.0% | – |
| Carpooled | 8.0% ±6.3 pts | 9.0% | – |
| Public transportation | 0.6% ±1.0 pts | 1.3% | – |
| Walked | 0.0% ±6.9 pts | 2.9% | – |
| Worked from home | 3.2% ±2.8 pts | 8.6% | – |
| Mean travel time to work | 22.7 min ±3.7 | 19.7 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 Andalusia?
No census tract lies mostly in Andalusia; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 241.02Rock Island County | 4,840 | $90,294 |
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 Andalusia) · Census block assignment files
How does Andalusia compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Andalusia is the 9,677th-most populous of the 19,476 U.S. incorporated places that have one and the 599th-most populous of 1,294 in Illinois.
Andalusia ranks 691st of 1,380 places in Illinois with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 599th | 1,294 |
| Growth 2020-2025 (PEP) | 491st | 1,347 |
| Residents per square mile | 625th | 1,383 |
| Median household income | 691st | 1,380 |
| Per capita income | 459th | 1,383 |
| Median home value | 699th | 1,379 |
| Median gross rent | 909th | 1,280 |
| Bachelor's degree or higher | 1,030th | 1,369 |
| Median age | 66th | 1,383 |
| Owner-occupied share | 300th | 1,382 |
| Travel time to work | 942nd | 1,382 |
Andalusia's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Andalusia 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 Andalusia?
26 of the 57 figures for Andalusia 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 Andalusia 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 Andalusia.