How old are the homes in Salem Township (Marion County), IL?

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

67.2% (±7.4 points) of the homes in Salem Township (Marion County), IL were built before 1980 (2020–2024 American Community Survey).

14.5% were built before 1940.

3.4% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 67.2% (±7.4 points)
Built before 1940: 14.5%
Built 2010 or later: 3.4%

When the homes in Salem Township (Marion County) were built

Housing units by year structure built, 2020–2024
Year built	Salem Township (Marion County)	Marion County	Illinois	United States
2020 or later	0.0% (±0.9 points)	0.3%	0.7%	2.0%
2010 to 2019	3.4% (±1.8 points)	5.3%	5.0%	9.4%
2000 to 2009	7.1% (±2.5 points)	9.3%	11.2%	13.6%
1990 to 1999	9.6% (±2.8 points)	12.3%	10.5%	12.4%
1980 to 1989	12.7% (±2.9 points)	10.7%	9.2%	12.9%
1970 to 1979	21.1% (±4.0 points)	17.3%	14.2%	14.2%
1960 to 1969	11.0% (±2.5 points)	11.6%	11.5%	9.9%
1950 to 1959	12.0% (±3.3 points)	10.8%	11.9%	9.5%
1940 to 1949	8.6% (±2.7 points)	7.7%	5.6%	4.4%
1939 or earlier	14.5% (±3.7 points)	14.8%	20.2%	11.7%

In Salem Township (Marion County), the share of homes built before 1980 is not measurably different from Marion County (62.2%).

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

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

In Marion County, Salem Township (Marion County) ranks 13 of 31 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 1542 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 (46.1%) and the share built before 1980 (67.2%).

Homes built before 1980 in places near Salem Township (Marion County)

Nearest places with a published estimate, compared with Salem Township (Marion County)
Place	Distance	Homes built before 1980	Compared with this place
Salem Township (Marion County)	—	67.2% (±7.4 points)	—
Salem	1.5 mi	73.0% (±8.9 points)	Not measurably different
Odin	4.4 mi	74.5% (±22.9 points)	Not measurably different
Odin Township	4.8 mi	62.1% (±15.9 points)	Not measurably different
Tonti Township	5.6 mi	57.6% (±19.6 points)	Not measurably different
Stevenson Township	6.0 mi	44.1% (±13.4 points)	Lower
Raccoon Township	6.2 mi	40.1% (±10.3 points)	Lower
Sandoval Township	7.6 mi	54.7% (±10.8 points)	Not measurably different
Sandoval	7.9 mi	56.1% (±15.1 points)	Not measurably different

Nearby places with a measurably lower figure: Stevenson Township, IL (44.1%), Raccoon Township, IL (40.1%).

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

Homes built before 1980 across Marion County, place by place

Rank	Place	Homes built before 1980
7	Wamac	70.3% (±16.7 points)
8	Walnut Hill	69.2% (±32.1 points)
9 (tie)	Vernon	68.7% (±31.0 points)
9 (tie)	Centralia Township	68.7% (±5.8 points)
11	Patoka Township	67.9% (±12.4 points)
12	Alma	67.3% (±19.0 points)
13	Salem Township (Marion County)	67.2% (±7.4 points)
14	Central City	66.1% (±14.2 points)
15	Odin Township	62.1% (±15.9 points)
16	Tonti Township	57.6% (±19.6 points)
17	Sandoval	56.1% (±15.1 points)
18	Iuka Township	55.9% (±12.6 points)
19	Sandoval Township	54.7% (±10.8 points)

Showing 13 of 31 places in Marion 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 Salem Township (Marion County)

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 Salem Township (Marion County), 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 Salem Township (Marion County) beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Salem Township (Marion County), save the ones you like and apply online.

Browse rentals · Create a renter account

Questions about Salem Township (Marion County)

How old are most homes in Salem Township (Marion County)?

67.2% of homes in Salem Township (Marion County), IL were built before 1980 (2020–2024 American Community Survey).

Do homes in Salem Township (Marion County) 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 46.1% and 67.2% of homes in Salem Township (Marion County) were built before then.

Does a contractor need lead certification to work on older homes in Salem Township (Marion County)?

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 — Salem township, Marion 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 Salem township, Marion County, Illinois (county subdivision:67249, in state:17 county:121).

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.