How old are the homes in Ontario, WI?
60.6% (±14.8 points) of the homes in Ontario, WI were built before 1980 (2020–2024 American Community Survey).
27.1% were built before 1940.
3.7% were built in 2010 or later.
Figures last updated on .
- Built before 1980
- 60.6% (±14.8 points)
- Built before 1940
- 27.1%
- Built 2010 or later
- 3.7%
When the homes in Ontario were built
| Year built | Ontario | Vernon County | Wisconsin | United States |
|---|---|---|---|---|
| 2020 or later | 0.0% (±9.8 points) | 1.7% | 1.4% | 2.0% |
| 2010 to 2019 | 3.7% (±2.3 points) | 7.5% | 7.1% | 9.4% |
| 2000 to 2009 | 11.5% (±5.4 points) | 13.3% | 12.5% | 13.6% |
| 1990 to 1999 | 6.0% (±5.3 points) | 11.2% | 12.5% | 12.4% |
| 1980 to 1989 | 18.3% (±9.6 points) | 8.4% | 9.5% | 12.9% |
| 1970 to 1979 | 16.1% (±8.4 points) | 12.8% | 14.2% | 14.2% |
| 1960 to 1969 | 5.0% (±2.9 points) | 7.1% | 9.4% | 9.9% |
| 1950 to 1959 | 7.8% (±4.5 points) | 6.0% | 10.3% | 9.5% |
| 1940 to 1949 | 4.6% (±3.2 points) | 8.0% | 5.3% | 4.4% |
| 1939 or earlier | 27.1% (±10.4 points) | 24.0% | 17.8% | 11.7% |
In Ontario, the share of homes built before 1980 is not measurably different from Vernon County (57.9%).
It is not measurably different from Wisconsin (57.0%).
It is not measurably different from the national figure (49.7%).
In Vernon County, Ontario ranks 12 of 31 places with a published estimate, from highest to lowest share of homes built before 1980.
Statewide, it ranks 604 of 1,848.
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 (44.5%) and the share built before 1980 (60.6%).
- 40 CFR part 745: Lead-based paint poisoning prevention in certain residential structures (eCFR)
- 24 CFR part 35: Lead-based paint poisoning prevention in certain residential structures (eCFR)
Homes built before 1980 in places near Ontario
| Place | Distance | Homes built before 1980 | Compared with this place |
|---|---|---|---|
| Ontario | — | 60.6% (±14.8 points) | — |
| Town of Whitestown | 2.9 mi | 38.1% (±10.8 points) | Lower |
| Town of Sheldon | 3.9 mi | 44.2% (±16.6 points) | Not measurably different |
| Town of Forest (Vernon County) | 5.6 mi | 55.8% (±14.7 points) | Not measurably different |
| Town of Wellington | 6.0 mi | 75.0% (±14.9 points) | Not measurably different |
| Wilton | 7.1 mi | 73.3% (±17.1 points) | Not measurably different |
| Town of Clinton (Vernon County) | 7.8 mi | 51.6% (±11.0 points) | Not measurably different |
| Norwalk | 7.9 mi | 55.4% (±14.7 points) | Not measurably different |
| Town of Jefferson (Monroe County) | 8.6 mi | 48.5% (±16.6 points) | Not measurably different |
Nearby places with a measurably lower figure: Town of Whitestown, WI (38.1%).
Distance is measured in a straight line between the Census Bureau’s internal points for each place.
Homes built before 1980 across Vernon County, place by place
| Rank | Place | Homes built before 1980 |
|---|---|---|
| 6 (tie) | Westby | 66.8% (±11.8 points) |
| 6 (tie) | Town of Sterling (Vernon County) | 66.8% (±14.5 points) |
| 8 | Town of Franklin (Vernon County) | 65.9% (±13.2 points) |
| 9 | Stoddard | 65.2% (±11.0 points) |
| 10 | Town of Union (Vernon County) | 65.0% (±19.0 points) |
| 11 | La Farge | 61.5% (±13.0 points) |
| 12 | Ontario | 60.6% (±14.8 points) |
| 13 | Town of Bergen (Vernon County) | 60.3% (±11.3 points) |
| 14 | Coon Valley | 59.3% (±11.0 points) |
| 15 | Town of Forest (Vernon County) | 55.8% (±14.7 points) |
| 16 | Town of Viroqua | 52.3% (±10.6 points) |
| 17 | Town of Clinton (Vernon County) | 51.6% (±11.0 points) |
| 18 (tie) | Town of Hillsboro | 51.1% (±11.9 points) |
Showing 13 of 31 places in Vernon 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 Ontario
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 Ontario, and send estimates and invoices from your phone.
Own or manage a rental?
List it, sign the lease and collect rent online, with the figures for Ontario beside you.
Create a landlord account · See what landlords get
Looking for a place to rent?
Browse homes for rent near Ontario, save the ones you like and apply online.
Questions about Ontario
How old are most homes in Ontario?
60.6% of homes in Ontario, WI were built before 1980 (2020–2024 American Community Survey).
Do homes in Ontario 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 44.5% and 60.6% of homes in Ontario were built before then.
Does a contractor need lead certification to work on older homes in Ontario?
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 — Ontario village, Wisconsin
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 Ontario village, Wisconsin (place:60075, in state:55).
Each estimate (E or PE) has a margin of error beside it (M or PM).
The API needs a free 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.
Figures last updated on .