How old are the homes in Andalusia Township, IL?

Name: Age of homes in Andalusia Township, IL, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

65.3% (±14.3 points) of the homes in Andalusia Township, IL were built before 1980 (2020–2024 American Community Survey).

10.3% were built before 1940.

11.0% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 65.3% (±14.3 points)
Built before 1940: 10.3%
Built 2010 or later: 11.0%

When the homes in Andalusia Township were built

Housing units by year structure built, 2020–2024
Year built	Andalusia Township	Rock Island County	Illinois	United States
2020 or later	0.0% (±3.5 points)	0.5%	0.7%	2.0%
2010 to 2019	11.0% (±6.6 points)	3.8%	5.0%	9.4%
2000 to 2009	8.0% (±6.7 points)	6.2%	11.2%	13.6%
1990 to 1999	11.0% (±5.5 points)	5.6%	10.5%	12.4%
1980 to 1989	4.7% (±2.3 points)	7.7%	9.2%	12.9%
1970 to 1979	17.8% (±5.8 points)	14.5%	14.2%	14.2%
1960 to 1969	16.7% (±6.2 points)	15.5%	11.5%	9.9%
1950 to 1959	14.0% (±8.2 points)	15.5%	11.9%	9.5%
1940 to 1949	6.5% (±5.5 points)	8.8%	5.6%	4.4%
1939 or earlier	10.3% (±6.0 points)	21.9%	20.2%	11.7%

In Andalusia Township, the share of homes built before 1980 is not measurably different from Rock Island County (76.2%).

It is not measurably different from Illinois (63.4%).

It is higher than the national figure (49.7%).

In Rock Island County, Andalusia Township ranks 22 of 33 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 1626 of 2,751.

Rankings use the estimates alone; where margins of error overlap, neighboring ranks may not truly differ.

Why the age of a home matters: lead-based paint

Federal law treats housing built before 1978 as likely to contain lead-based paint.

Before a lease or sale of most pre-1978 housing, the landlord or seller must disclose any known lead-based paint and hazards and give the tenant or buyer the EPA pamphlet (42 U.S.C. § 4852d; 40 CFR part 745, subpart F; 24 CFR part 35, subpart A).

A contractor paid to renovate, repair or paint a pre-1978 home must be a certified firm, use a certified renovator and follow lead-safe work practices under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E) whenever the job disturbs more than 6 square feet of painted surface in a room or more than 20 square feet outside; window replacement and demolition always count (40 CFR 745.83).

Certification comes from EPA, or from the state where EPA has authorized the state to run the program.

The Census Bureau groups construction by decade, so the share built before 1978 lies between the share built before 1970 (47.5%) and the share built before 1980 (65.3%).

Homes built before 1980 in places near Andalusia Township

Nearest places with a published estimate, compared with Andalusia Township
Place	Distance	Homes built before 1980	Compared with this place
Andalusia Township	—	65.3% (±14.3 points)	—
Andalusia	0.4 mi	73.8% (±17.8 points)	Not measurably different
Buffalo	3.0 mi	88.5% (±21.4 points)	Not measurably different
Edgington Township	4.4 mi	88.7% (±18.8 points)	Not measurably different
Blue Grass	5.6 mi	53.3% (±9.8 points)	Not measurably different
Buffalo Prairie Township	6.1 mi	72.6% (±29.5 points)	Not measurably different
Blackhawk Township	6.5 mi	74.3% (±9.0 points)	Not measurably different
Bowling Township	7.4 mi	56.9% (±12.3 points)	Not measurably different
Rock Island	7.4 mi	84.3% (±4.3 points)	Higher

Nearby places with a measurably higher figure: Rock Island, IL (84.3%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes built before 1980 across Rock Island County, place by place

Rank	Place	Homes built before 1980
16	Port Byron Township	73.5% (±11.6 points)
17	Buffalo Prairie Township	72.6% (±29.5 points)
18	Cordova	72.2% (±13.9 points)
19	East Moline	69.6% (±6.8 points)
20	Rapids City	69.5% (±14.5 points)
21	Hampton	67.0% (±12.9 points)
22	Andalusia Township	65.3% (±14.3 points)
23	Hampton Township	64.5% (±5.4 points)
24	Carbon Cliff	63.4% (±11.9 points)
25	Oak Grove	63.1% (±25.0 points)
26	Zuma Township	62.9% (±26.3 points)
27	Rural Township (Rock Island County)	59.6% (±23.5 points)
28	Silvis	59.5% (±9.3 points)

Showing 13 of 33 places in Rock Island County, ranked from highest to lowest.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

What you can do on Seayora in Andalusia Township

One account for renting, owning, managing and fixing homes, with these figures beside you.

Do repairs, renovations or maintenance?

Get found by owners and renters near Andalusia Township, and send estimates and invoices from your phone.

Join as a pro · Find a pro

Own or manage a rental?

List it, sign the lease and collect rent online, with the figures for Andalusia Township beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Andalusia Township, save the ones you like and apply online.

Browse rentals · Create a renter account

Questions about Andalusia Township

How old are most homes in Andalusia Township?

65.3% of homes in Andalusia Township, IL were built before 1980 (2020–2024 American Community Survey).

Do homes in Andalusia Township need a lead paint disclosure?

A home built before 1978 does, before it is rented or sold, unless an exemption applies (42 U.S.C. § 4852d); between 47.5% and 65.3% of homes in Andalusia Township were built before then.

Does a contractor need lead certification to work on older homes in Andalusia Township?

Yes, when the job disturbs more than 6 square feet of paint in a room or 20 square feet outside, or replaces a window: the firm must be certified and a certified renovator must direct the work under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E).

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Andalusia township, Rock Island County, Illinois

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Andalusia township, Rock Island County, Illinois (county subdivision:01439, in state:17 county:161).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0017PE, DP04_0017PM, DP04_0018PE, DP04_0018PM, DP04_0019PE, DP04_0019PM, DP04_0020PE, DP04_0020PM, DP04_0021PE, DP04_0021PM, DP04_0022PE, DP04_0022PM, DP04_0023PE, DP04_0023PM, DP04_0024PE, DP04_0024PM, DP04_0025PE, DP04_0025PM, DP04_0026PE, DP04_0026PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.