Electrical repair · Fontana, California

Electrician for repairs and upgrades in Fontana, CA

Breaker keeps tripping, outlets dead, planning a panel upgrade or EV charger? 15% of Fontana's homes date from 1960–1979^[1] and 4% from 2020 or later. Request a licensed electrician who works here. Fontana, in San Bernardino County — ZIPs 92336, 92337, 92335, counts 221,223 residents (2025 estimate)^[2].

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Fontana electrical snapshot: the key figures

Population (2025 est.): 221,223^[2]+6.1% since 2020
County: San Bernardino^[2]
Land area: 43.3 sq mi^[3]
Population density: 5,111 / sq mi^[2]^[3]
Homes built 1960–1979: 15%^[1]the 7th-lowest share of the 15 Inland Empire suburbs we cover
Homes built before 1960: 13%^[1]2020–2024
Homes built 2020 or later: 4%^[1]2020–2024
Homes heated with electricity: 20%^[1]the 5th-highest share of the 15 Inland Empire suburbs we cover
Lightning-damage reports within 10 mi: 1^[4]2016–2025
Damaging-wind reports within 10 mi: 1^[4]2016–2025

What the local data means for electrical in Fontana

Fontana is one of the fastest-growing Inland Empire suburbs tracked here: 221,223 people (2025 estimate), up 6.1% since 2020^[2]. On the map that's 43.3 square miles holding 5,111 residents per square mile, the 2nd densest of the suburbs here; it sits entirely in San Bernardino County, with ZIP codes 92336, 92337, 92335^[3].

New construction arrives with 200-amp panels and room to grow; the older homes nearby are the ones where panels fill up, double-taps appear, and an EV charger triggers a load calculation.

Fontana is split across 3 ZIP codes: 92336 (44% of the city's land), 92337 (32% of the city's land), 92335 (22% of the city's land)^[5].

The tracked suburbs closest by are Rialto (4.2 mi E), Rancho Cucamonga (6.1 mi W) and Ontario (9.6 mi SW)^[3].

15% of Fontana's housing was built in 1960–1979^[1] — the 7th-lowest share of the 15 Inland Empire suburbs we cover; nearby, Rialto (25%), Rancho Cucamonga (25%), and Ontario (27%). That window includes roughly 1965–1973, when some homes got aluminum branch wiring^[6].

20% of Fontana homes heat with electricity and 74% with gas^[1] — the 5th-highest share of the 15 Inland Empire suburbs we cover (Rialto (24%), Rancho Cucamonga (21%), and Ontario (22%) nearby). Gas-heated homes often have more panel headroom, but only a load calculation tells.

Within 10 miles of central Fontana: 1 damaging-wind report and 1 lightning-damage report in 2016–2025, the latest on Aug 1, 2017^[4].

4% of Fontana's housing is from 2020 or later^[1] — new enough that builder warranties still apply to many electrical defects.

Out of the 15 suburbs on this site, Fontana has the 2nd-most lightning-damage reports nearby (1, tied with 7 other suburbs)^[4].

electrical help in Fontana: what to do next

Requests go to Electrical repair contractors serving the Fontana area — ZIP codes 92336, 92337, 92335.

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Before reaching out: when to call an electrician now

Whose wiring is it? Fontana homes by building type

77%^[1] of Fontana's homes are detached houses with their own panel, so panel upgrades and EV chargers are the owner's decision — and the owner's permit.

After detached houses, the biggest group is 50 or more units: 4,863 of 59,522 housing units^[1].

For Fontana's 1,546 mobile homes (2.6%), ask for an electrician who works on manufactured homes.

Fontana's 59,522 housing units by building type, 2020–2024^[1]
Building type	Units	Share	Margin of error
Detached house	45,602	76.6%	±963
Attached house (townhouse, rowhouse)	2,368	4.0%	±358
Duplex (2 units)	134	0.2%	±77
3–4 units	1,562	2.6%	±278
5–9 units	1,069	1.8%	±229
10–19 units	1,312	2.2%	±285
20–49 units	1,059	1.8%	±246
50 or more units	4,863	8.2%	±526
Mobile home	1,546	2.6%	±249
Boat, RV, van, etc.	7	0.0%	±13

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

The Fontana numbers behind this page

Fontana against the typical suburb we cover (median of 15)^[1]^[4]
Measure	Fontana	Median of 15	Difference
Built before 1960	12.9%	6.5%	6 pts higher
Built 1960–79	15%	18%	2 pts lower
Median home value	$586,800	$618,900	5% lower
Detached single-family	77%	73%	4 pts higher
Owner-occupied	67%	64%	3 pts higher
Built 1980–99	40%	41%	1 pts lower
Lightning-damage reports (10 mi)	1	1	same as median

Sorted by largest difference. Each median is the middle value across the covered Inland Empire suburbs, from the same sources.

How Fontana compares with its nearest neighbours^[4]^[3]
City	Lightning reports	Damaging-wind reports
Fontana	1	1
Rialto 4.2 mi	1	1
Rancho Cucamonga 6.1 mi	0	0
Ontario 9.6 mi	0	0
Eastvale 12.2 mi	1	2
Chino 14.9 mi	1	0

When Fontana's 59,522 housing units were built^[1]
Built	Units	Share	Margin of error
2020 or later	2,301	3.9%	±304
2010 to 2019	4,502	7.6%	±504
2000 to 2009	12,249	20.6%	±729
1990 to 1999	9,266	15.6%	±695
1980 to 1989	14,452	24.3%	±661
1970 to 1979	5,461	9.2%	±584
1960 to 1969	3,591	6.0%	±536
1950 to 1959	5,209	8.8%	±528
1940 to 1949	1,630	2.7%	±309
1939 or earlier	861	1.4%	±188

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

Most recent damaging-wind reports within 10 miles^[4]
Date	Wind	Distance
Aug 1, 2017	60 mph (est.)	9.5 mi

Lightning-damage reports within 10 miles^[4]
Date	Distance
Aug 31, 2017	8.9 mi

ZIP code areas covering Fontana^[5]
ZIP (ZCTA)	Share of Fontana's land	Share of the ZIP inside the city
92336	44%	96%
92337	32%	100%
92335	22%	53%

Common Fontana electrical questions

Could my Fontana house have aluminum wiring?

Possibly, if built or rewired roughly 1965–1973^[6]; 15% of Fontana homes date from 1960–1979^[1].

When did damaging wind last hit near Fontana?

Aug 1, 2017, 9.5 miles from the city center, 60 mph^[4].

Which Fontana ZIP codes are covered?

92336, 92337, and 92335^[5] — San Bernardino County. Neighbouring suburbs with their own pages: Rialto (4.2 mi), Rancho Cucamonga (6.1 mi), and Ontario (9.6 mi)^[3].

Sources

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