Roof repair & replacement · Ontario, California

Roof repair and replacement in Ontario, CA

Leaks, missing shingles or storm damage in Ontario? Request an inspection from roofers who work here. Ontario, in San Bernardino County — ZIPs 91761, 91762, 91764, counts 187,013 residents (2025 estimate)^[1].

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Roof repair or roof replacement?

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Decision guide

Ontario at a glance for roofing

Population (2025 est.): 187,013^[1]+6.7% since 2020
County: San Bernardino^[1]
Land area: 50.0 sq mi^[2]
Population density: 3,741 / sq mi^[1]^[2]
Hail reports within 10 mi: 0^[3]2016–2025 · 0 at 1 inch or larger
Damaging-wind reports within 10 mi: 0^[3]2016–2025
Median year homes were built: 1980^[4]the 2nd-oldest of the 15 Inland Empire suburbs we cover
Median home value: $607,600^[4]2020–2024
Detached single-family homes: 58%^[4]share of all housing units

Reading the Ontario data for roofing

Ontario is one of the fastest-growing Inland Empire suburbs tracked here: 187,013 people (2025 estimate), up 6.7% since 2020^[1]. It covers 50.0 square miles (3,741 residents per square mile, the 7th densest), sits entirely in San Bernardino County, in ZIP codes 91761, 91762, 91764^[2].

Roofs of every age sit side by side here: 14% of homes were built in 2010 or later and 50% before 1980^[4], so two houses on one street can need very different roof work.

3 ZIP codes cover Ontario — 91761 (57% of the city's land), 91762 (27% of the city's land), 91764 (16% of the city's land)^[5].

The tracked suburbs closest by are Eastvale (5.3 mi S), Chino (5.5 mi SW) and Rancho Cucamonga (6.8 mi N)^[2].

No hail or damaging thunderstorm-wind reports fall within 10 miles of central Ontario for 2016–2025^[3], versus Eastvale (0), Chino (1), and Rancho Cucamonga (0) nearby. Reports need an observer, so a quiet record isn't a guarantee.

Half of Ontario's homes were built before 1980^[4] — the 2nd-oldest of the 15 Inland Empire suburbs we cover (median years nearby: Eastvale (2007), Chino (1987), and Rancho Cucamonga (1988)). Many roofs here have likely been replaced before — ask what is under the current layer.

Median home value: $607,600 (the 7th-lowest of the 15 Inland Empire suburbs we cover); 58% of housing is detached houses^[4].

Out of the 15 suburbs on this site, Ontario has the fewest hail reports nearby (0, tied with 8 other suburbs)^[3], the fewest damaging-wind reports nearby (0, tied with 3 other suburbs)^[3], the 2nd-oldest housing (by median year built) (1980)^[4], and the 2nd-lowest share of detached houses (58%)^[4].

Finding roofing help around Ontario

Your request reaches Roof repair & replacement contractors who serve Ontario (ZIP codes 91761, 91762, 91764).

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Before you pick up the phone: after a hail or wind storm

Whose roof is it? Ontario homes by building type

With 38%^[4] of Ontario's homes attached or in multi-unit buildings (multi-unit buildings alone: 29%, the 2nd-highest multi-unit share of the 15 Inland Empire suburbs we cover), many roofs here are shared: in a townhouse, condo or apartment, ask your HOA, association or landlord who handles the roof before you hire anyone.

After detached houses, the biggest group is 50 or more units: 5,311 of 55,966 housing units^[4].

Ontario's 2,240 mobile homes (4.0%) need a roofer who works on manufactured-home roofs; mention it when you request help.

Ontario's 55,966 housing units by building type, 2020–2024^[4]
Building type	Units	Share	Margin of error
Detached house	32,411	57.9%	±996
Attached house (townhouse, rowhouse)	4,981	8.9%	±608
Duplex (2 units)	1,154	2.1%	±311
3–4 units	4,051	7.2%	±538
5–9 units	2,197	3.9%	±354
10–19 units	2,138	3.8%	±426
20–49 units	1,458	2.6%	±337
50 or more units	5,311	9.5%	±625
Mobile home	2,240	4.0%	±377
Boat, RV, van, etc.	25	0.0%	±38

Margins of error are the Census Bureau’s 90% intervals; small categories in small cities are rough.

Ontario by the numbers

Ontario against the typical suburb we cover (median of 15)^[3]^[4]
Measure	Ontario	Median of 15	Difference
Damaging-wind reports (10 mi)	0	2	2 fewer
Built 2010 or later	14%	10%	4 pts higher
Detached single-family	58%	73%	15 pts lower
Owner-occupied	58%	64%	6 pts lower
Median home value	$607,600	$618,900	2% lower
Median year built	1980	1989	9 years older

Largest differences first. Medians are the middle value across the covered Inland Empire suburbs, from the same sources.

How Ontario compares with its nearest neighbours^[3]^[4]^[2]
City	Hail reports ≤10 mi	Median year built
Ontario	0	1980
Eastvale 5.3 mi	0	2007
Chino 5.5 mi	1	1987
Rancho Cucamonga 6.8 mi	0	1988
Chino Hills 9.4 mi	1	1990
Fontana 9.6 mi	0	1989

When Ontario's 55,966 housing units were built^[4]
Built	Units	Share	Margin of error
2020 or later	2,509	4.5%	±435
2010 to 2019	5,500	9.8%	±637
2000 to 2009	3,841	6.9%	±488
1990 to 1999	4,700	8.4%	±856
1980 to 1989	11,576	20.7%	±787
1970 to 1979	10,209	18.2%	±836
1960 to 1969	4,854	8.7%	±526
1950 to 1959	7,712	13.8%	±557
1940 to 1949	2,174	3.9%	±344
1939 or earlier	2,891	5.2%	±375

ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.

ZIP code areas covering Ontario^[5]
ZIP (ZCTA)	Share of Ontario's land	Share of the ZIP inside the city
91761	57%	100%
91762	27%	95%
91764	16%	100%

roofing questions from Ontario homeowners

Which Ontario areas do these roofers cover?

ZIP 91761, 91762, and 91764^[5], San Bernardino County. Close by: Eastvale (5.3 mi), Chino (5.5 mi), and Rancho Cucamonga (6.8 mi)^[2].

Storm disaster declarations for San Bernardino County?

8 storm-related declarations since 2000, including Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides (DR-4699, 2023), Severe Winter Storms, Flooding, Landslides, and Mudslides (EM-3592, 2023), and Severe Winter Storms, Flooding, and Mudslides (EM-3591, 2023)^[6].

A lot of Ontario homes predate 1980 — what does that mean for roof work?

50% of Ontario's housing units were built before 1980, 22.8% before 1960^[4] — the 2nd-highest share of the 15 Inland Empire suburbs we cover. Older houses are more likely to be on a second or later roof; ask whether a quote includes tearing off every existing layer and checking the decking underneath.

My Ontario home is fairly new — could the roof still be under warranty?

Possibly: 14% of Ontario's housing units were built in 2010 or later^[4], the 4th-highest share of the 15 Inland Empire suburbs we cover. Check your closing paperwork for warranties before paying for a repair.

Sources

Data pulled Sep 28, 2026. Full citations and method.