How old are the homes in Alexis, IL?

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

92.1% (±15.4 points) of the homes in Alexis, IL were built before 1980 (2020–2024 American Community Survey).

44.8% were built before 1940.

1.3% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 92.1% (±15.4 points)
Built before 1940: 44.8%
Built 2010 or later: 1.3%

When the homes in Alexis were built

Housing units by year structure built, 2020–2024
Year built	Alexis	Warren County	Illinois	United States
2020 or later	0.8% (±1.1 points)	0.5%	0.7%	2.0%
2010 to 2019	0.5% (±1.0 points)	1.6%	5.0%	9.4%
2000 to 2009	0.0% (±9.7 points)	5.2%	11.2%	13.6%
1990 to 1999	2.2% (±3.3 points)	3.3%	10.5%	12.4%
1980 to 1989	4.4% (±5.3 points)	5.0%	9.2%	12.9%
1970 to 1979	21.6% (±8.9 points)	15.7%	14.2%	14.2%
1960 to 1969	13.9% (±6.0 points)	13.1%	11.5%	9.9%
1950 to 1959	6.3% (±4.0 points)	14.1%	11.9%	9.5%
1940 to 1949	5.5% (±3.7 points)	7.6%	5.6%	4.4%
1939 or earlier	44.8% (±9.6 points)	33.9%	20.2%	11.7%

In Alexis, the share of homes built before 1980 is not measurably different from Warren County (84.4%).

It is also higher than in Illinois (63.4%).

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

In Warren County, Alexis ranks 8 of 20 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 126 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 (70.5%) and the share built before 1980 (92.1%).

Homes built before 1980 in places near Alexis

Nearest places with a published estimate, compared with Alexis
Place	Distance	Homes built before 1980	Compared with this place
Alexis	—	92.1% (±15.4 points)	—
Kelly Township	4.1 mi	80.3% (±35.7 points)	Not measurably different
Suez Township	4.3 mi	74.1% (±16.0 points)	Not measurably different
North Henderson Township	4.5 mi	92.4% (±22.9 points)	Not measurably different
North Henderson	4.6 mi	97.8% (±31.2 points)	Not measurably different
Spring Grove Township	4.7 mi	80.0% (±16.6 points)	Not measurably different
Rio	8.8 mi	89.3% (±19.8 points)	Not measurably different
Sumner Township (Warren County)	9.3 mi	93.9% (±15.4 points)	Not measurably different
Henderson Township	9.4 mi	86.7% (±20.3 points)	Not measurably different

None of the nearby places differs measurably from this one on this figure.

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

Homes built before 1980 across Warren County, place by place

Rank	Place	Homes built before 1980
1 (tie)	Floyd Township	100.0% (±36.1 points)
1 (tie)	Lenox Township	100.0% (±74.0 points)
1 (tie)	Point Pleasant Township	100.0% (±86.0 points)
5	Berwick Township	96.3% (±42.6 points)
6	Sumner Township (Warren County)	93.9% (±15.4 points)
7	Hale Township	93.6% (±56.3 points)
8	Alexis	92.1% (±15.4 points)
9	Kirkwood	90.8% (±19.1 points)
10	Little York	89.3% (±23.5 points)
11	Monmouth	88.1% (±9.2 points)
12	Swan Township	87.6% (±85.0 points)
13	Roseville	87.5% (±15.7 points)
14	Tompkins Township	86.8% (±17.2 points)

Showing 13 of 20 places in Warren 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 Alexis

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 Alexis, 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 Alexis beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

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

Browse rentals · Create a renter account

Questions about Alexis

How old are most homes in Alexis?

92.1% of homes in Alexis, IL were built before 1980 (2020–2024 American Community Survey).

Do homes in Alexis 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 70.5% and 92.1% of homes in Alexis were built before then.

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

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 — Alexis village, 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 Alexis village, Illinois (place:00672, in state:17).

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.