How old are the homes in St. Joseph, IL?

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

34.8% (±9.4 points) of the homes in St. Joseph, IL were built before 1980 (2020–2024 American Community Survey).

6.2% were built before 1940.

3.8% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 34.8% (±9.4 points)
Built before 1940: 6.2%
Built 2010 or later: 3.8%

When the homes in St. Joseph were built

Housing units by year structure built, 2020–2024
Year built	St. Joseph	Champaign County	Illinois	United States
2020 or later	0.0% (±2.5 points)	1.0%	0.7%	2.0%
2010 to 2019	3.8% (±3.5 points)	12.9%	5.0%	9.4%
2000 to 2009	39.4% (±8.5 points)	14.6%	11.2%	13.6%
1990 to 1999	17.1% (±6.2 points)	11.9%	10.5%	12.4%
1980 to 1989	5.0% (±3.2 points)	11.3%	9.2%	12.9%
1970 to 1979	16.5% (±6.5 points)	14.0%	14.2%	14.2%
1960 to 1969	5.2% (±3.4 points)	10.9%	11.5%	9.9%
1950 to 1959	5.7% (±4.0 points)	8.1%	11.9%	9.5%
1940 to 1949	1.2% (±1.5 points)	3.3%	5.6%	4.4%
1939 or earlier	6.2% (±4.1 points)	12.1%	20.2%	11.7%

In St. Joseph, the share of homes built before 1980 is lower than in Champaign County (48.4%).

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

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

In Champaign County, St. Joseph ranks 49 of 54 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 2507 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 (18.3%) and the share built before 1980 (34.8%).

Homes built before 1980 in places near St. Joseph

Nearest places with a published estimate, compared with St. Joseph
Place	Distance	Homes built before 1980	Compared with this place
St. Joseph	—	34.8% (±9.4 points)	—
St. Joseph Township	1.6 mi	42.8% (±8.7 points)	Not measurably different
Ogden Township	4.1 mi	64.0% (±10.3 points)	Higher
Ogden	4.2 mi	59.5% (±18.3 points)	Higher
Stanton Township	5.1 mi	77.6% (±38.4 points)	Higher
Royal	6.4 mi	76.8% (±18.5 points)	Higher
Sidney	6.5 mi	69.0% (±12.2 points)	Higher
Urbana Township	6.5 mi	50.6% (±9.5 points)	Higher
Homer	7.0 mi	84.3% (±12.9 points)	Higher

Nearby places with a measurably higher figure: Ogden Township, IL (64.0%), Ogden, IL (59.5%), Stanton Township, IL (77.6%).

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

Homes built before 1980 across Champaign County, place by place

Rank	Place	Homes built before 1980
43	Harwood Township	43.8% (±14.6 points)
44 (tie)	Champaign	43.7% (±2.5 points)
44 (tie)	Champaign City Township	43.7% (±2.5 points)
46	St. Joseph Township	42.8% (±8.7 points)
47	Champaign Township	39.2% (±6.1 points)
48	Newcomb Township	38.4% (±16.1 points)
49	St. Joseph	34.8% (±9.4 points)
50	Tolono Township	33.3% (±7.9 points)
51	Lake of the Woods	32.0% (±17.4 points)
52	Mahomet Township	30.9% (±6.9 points)
53	Mahomet	26.6% (±7.5 points)
54	Savoy	24.1% (±6.5 points)

Showing 12 of 54 places in Champaign 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.

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Questions about St. Joseph

How old are most homes in St. Joseph?

34.8% of homes in St. Joseph, IL were built before 1980 (2020–2024 American Community Survey).

Do homes in St. Joseph 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 18.3% and 34.8% of homes in St. Joseph were built before then.

Does a contractor need lead certification to work on older homes in St. Joseph?

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 — St. Joseph 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 St. Joseph village, Illinois (place:66950, 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.