How old are the homes in Warren Township (Lake County), IL?

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

27.2% (±2.5 points) of the homes in Warren Township (Lake County), IL were built before 1980 (2020–2024 American Community Survey).

1.6% were built before 1940.

6.9% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 27.2% (±2.5 points)
Built before 1940: 1.6%
Built 2010 or later: 6.9%

When the homes in Warren Township (Lake County) were built

Housing units by year structure built, 2020–2024
Year built	Warren Township (Lake County)	Lake County	Illinois	United States
2020 or later	0.3% (±0.2 points)	0.6%	0.7%	2.0%
2010 to 2019	6.6% (±1.2 points)	4.9%	5.0%	9.4%
2000 to 2009	13.1% (±1.7 points)	14.9%	11.2%	13.6%
1990 to 1999	34.2% (±2.2 points)	18.4%	10.5%	12.4%
1980 to 1989	18.8% (±1.7 points)	14.9%	9.2%	12.9%
1970 to 1979	12.3% (±1.8 points)	15.3%	14.2%	14.2%
1960 to 1969	6.9% (±1.1 points)	9.5%	11.5%	9.9%
1950 to 1959	5.0% (±1.1 points)	9.4%	11.9%	9.5%
1940 to 1949	1.4% (±0.6 points)	3.6%	5.6%	4.4%
1939 or earlier	1.6% (±0.5 points)	8.4%	20.2%	11.7%

In Warren Township (Lake County), the share of homes built before 1980 is lower than in Lake County (46.2%).

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

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

In Lake County, Warren Township (Lake County) ranks 60 of 71 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 2610 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 (14.9%) and the share built before 1980 (27.2%).

Homes built before 1980 in places near Warren Township (Lake County)

Nearest places with a published estimate, compared with Warren Township (Lake County)
Place	Distance	Homes built before 1980	Compared with this place
Warren Township (Lake County)	—	27.2% (±2.5 points)	—
Gurnee	0.5 mi	21.1% (±2.8 points)	Lower
Gages Lake	2.4 mi	40.9% (±6.4 points)	Higher
Grandwood Park	2.6 mi	42.7% (±11.9 points)	Higher
Park City	3.1 mi	30.7% (±8.2 points)	Not measurably different
Third Lake	3.2 mi	14.7% (±6.4 points)	Lower
Waukegan	3.9 mi	68.2% (±3.7 points)	Higher
Old Mill Creek	4.5 mi	79.3% (±25.4 points)	Higher
Grayslake	5.0 mi	23.5% (±4.0 points)	Not measurably different

Nearby places with a measurably lower figure: Gurnee, IL (21.1%), Third Lake, IL (14.7%).

Nearby places with a measurably higher figure: Gages Lake, IL (40.9%), Grandwood Park, IL (42.7%), Waukegan, IL (68.2%).

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

Homes built before 1980 across Lake County, place by place

Rank	Place	Homes built before 1980
53 (tie)	Vernon Hills	31.3% (±3.7 points)
55	Park City	30.7% (±8.2 points)
56	Lake Villa Township	30.6% (±3.3 points)
57	Kildeer	29.5% (±8.8 points)
58 (tie)	Deer Park	27.6% (±8.5 points)
58 (tie)	Round Lake Park	27.6% (±6.6 points)
60	Warren Township (Lake County)	27.2% (±2.5 points)
61	Fremont Township	25.6% (±3.4 points)
62	Grayslake	23.5% (±4.0 points)
63	Indian Creek	23.3% (±16.7 points)
64	Long Grove	22.2% (±6.4 points)
65	Gurnee	21.1% (±2.8 points)
66	Lake Villa	20.0% (±6.4 points)

Showing 13 of 71 places in Lake 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 Warren Township (Lake County)

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Questions about Warren Township (Lake County)

How old are most homes in Warren Township (Lake County)?

27.2% of homes in Warren Township (Lake County), IL were built before 1980 (2020–2024 American Community Survey).

Do homes in Warren Township (Lake 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 14.9% and 27.2% of homes in Warren Township (Lake County) were built before then.

Does a contractor need lead certification to work on older homes in Warren Township (Lake 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 — Warren township, Lake 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 Warren township, Lake County, Illinois (county subdivision:78877, in state:17 county:097).

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.