Andalusia, IL Profile: Facts & Data

Andalusia, Illinois - Basic Facts

The Village of Andalusia had a population of 1,173 as of July 1, 2025.

The primary coordinate point for Andalusia is located at latitude 41.4392 and longitude -90.7176 in Rock Island County. The formal boundaries for the Village of Andalusia encompass a land area of 1.18 sq. miles and a water area of 0 sq. miles. Rock Island County is in the Central time zone (GMT -6).

The Village of Andalusia has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The Village of Andalusia is located within Township of Andalusia, a minor civil division (MCD) of Rock Island County.

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Andalusia, IL Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	1,173 (100%)
Population in Households	1,173 (100.0%)
Population in Families	1,004 (85.6%)
Population in Group Quarters¹	0
Population Density	999
Diversity Index²	18


INCOME
Median Household Income	$74,867
Average Household Income	$96,422
% of Income for Mortgage⁴	19%
Per Capita Income	$39,868
Wealth Index⁵	87
Socioeconomic Status Index⁶	Moderate (60.8)

HOUSING
Total HU (Housing Units)	500 (100%)
Owner Occupied HU	429 (85.8%)
Renter Occupied HU	56 (11.2%)
Vacant Housing Units	15 ( 3.0%)
Median Home Value	$221,094
Average Home Value	$219,196
Housing Affordability Index³	105

HOUSEHOLDS
Total Households	485
Average Household Size	2.42
Family Households	361
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

500 (100%)

Owner Occupied HU

429 (85.8%)

Renter Occupied HU

56 (11.2%)

Vacant Housing Units

15 ( 3.0%)

Median Home Value

$221,094

Average Home Value

$219,196

Housing Affordability Index³

105

HOUSEHOLDS

Total Households

485

Average Household Size

2.42

Family Households

361

Average Family Size

3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	-0.18%	-0.46%
Households	0.16%	0.04%
Families		-1.13%
Median Household Income		1.65%
Per Capita Income		2.28%
Owner Occupied HU		0.42%

GROWTH RATE / YEAR

2020-2025

2025-2030

Population

-0.18%

-0.46%

Households

0.16%

0.04%

Families

-1.13%

Median Household Income

1.65%

Per Capita Income

2.28%

Owner Occupied HU

0.42%

Andalusia, IL - Peer Comparisons by Rank and Percentile

The table below compares Andalusia to the other 1,461 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description	Rank	Percentile
Total Population	# 640	56th
Population Density	# 689	53rd
Median Household Income	# 772	47th
Housing Affordability Index	# 449	31st
Per Capita Income	# 698	52nd
Diversity Index	# 897	39th

Variable Description

Rank

Percentile

Total Population

# 640

56th

Population Density

# 689

53rd

Median Household Income

# 772

47th

Housing Affordability Index

# 449

31st

Per Capita Income

# 698

52nd

Diversity Index

# 897

39th

Illinois Census Data Comparison Tool

Andalusia, IL Profile: Facts & Data

Andalusia, Illinois - Basic Facts

Andalusia, IL Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Andalusia, IL - Peer Comparisons by Rank and Percentile

Andalusia, IL - Most Popular Things to Do

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Rock Island County