How old are the homes in Chatham Township, IL?

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

38.9% (±7.6 points) of the homes in Chatham Township, IL were built before 1980 (2020–2024 American Community Survey).

5.4% were built before 1940.

20.8% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 38.9% (±7.6 points)
Built before 1940: 5.4%
Built 2010 or later: 20.8%

When the homes in Chatham Township were built

Housing units by year structure built, 2020–2024
Year built	Chatham Township	Sangamon County	Illinois	United States
2020 or later	0.7% (±0.9 points)	0.4%	0.7%	2.0%
2010 to 2019	20.1% (±5.4 points)	5.9%	5.0%	9.4%
2000 to 2009	17.5% (±5.9 points)	9.5%	11.2%	13.6%
1990 to 1999	12.7% (±4.5 points)	12.9%	10.5%	12.4%
1980 to 1989	10.1% (±4.2 points)	9.4%	9.2%	12.9%
1970 to 1979	25.3% (±6.4 points)	18.5%	14.2%	14.2%
1960 to 1969	5.5% (±2.5 points)	11.8%	11.5%	9.9%
1950 to 1959	1.7% (±1.1 points)	10.0%	11.9%	9.5%
1940 to 1949	1.0% (±0.8 points)	6.0%	5.6%	4.4%
1939 or earlier	5.4% (±3.0 points)	15.5%	20.2%	11.7%

In Chatham Township, the share of homes built before 1980 is lower than in Sangamon County (61.8%).

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

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

In Sangamon County, Chatham Township ranks 44 of 51 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 2439 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 (13.6%) and the share built before 1980 (38.9%).

Homes built before 1980 in places near Chatham Township

Nearest places with a published estimate, compared with Chatham Township
Place	Distance	Homes built before 1980	Compared with this place
Chatham Township	—	38.9% (±7.6 points)	—
Chatham	3.4 mi	30.6% (±5.2 points)	Not measurably different
Loami Township	4.9 mi	59.2% (±14.4 points)	Higher
Loami	5.1 mi	53.6% (±12.0 points)	Higher
Curran Township	5.4 mi	66.9% (±22.5 points)	Higher
Curran	5.8 mi	65.1% (±27.9 points)	Not measurably different
Auburn	5.9 mi	61.3% (±15.0 points)	Higher
Ball Township	5.9 mi	25.5% (±6.5 points)	Lower
Auburn Township (Sangamon County)	6.5 mi	57.9% (±11.4 points)	Higher

Nearby places with a measurably lower figure: Ball Township, IL (25.5%).

Nearby places with a measurably higher figure: Loami Township, IL (59.2%), Loami, IL (53.6%), Curran Township, IL (66.9%).

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

Homes built before 1980 across Sangamon County, place by place

Rank	Place	Homes built before 1980
38	Rochester	46.1% (±9.6 points)
39	Rochester Township	44.5% (±8.1 points)
40	Cotton Hill Township	43.9% (±21.9 points)
41	Berlin	43.3% (±22.3 points)
42	Williams Township	42.5% (±10.5 points)
43	Island Grove Township	40.2% (±19.8 points)
44	Chatham Township	38.9% (±7.6 points)
45	Lanesville Township	34.5% (±57.5 points)
46	Fancy Creek Township	31.1% (±7.2 points)
47	Chatham	30.6% (±5.2 points)
48	Spaulding	28.5% (±10.4 points)
49	Ball Township	25.5% (±6.5 points)
50	Cooper Township	24.3% (±26.3 points)

Showing 13 of 51 places in Sangamon 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 Chatham 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 Chatham 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 Chatham Township beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

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

Browse rentals · Create a renter account

Questions about Chatham Township

How old are most homes in Chatham Township?

38.9% of homes in Chatham Township, IL were built before 1980 (2020–2024 American Community Survey).

Do homes in Chatham 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 13.6% and 38.9% of homes in Chatham Township were built before then.

Does a contractor need lead certification to work on older homes in Chatham 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 — Chatham township, Sangamon 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 Chatham township, Sangamon County, Illinois (county subdivision:12697, in state:17 county:167).

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.