Electric companies in Contra Costa County, California
Contra Costa County, CA ranks 9th of 58 California counties for heat wave risk, FEMA score 98.3. Contra Costa County, CA has 1,161,458 residents. Contra Costa County, CA: 1 utility listed by EIA. Contra Costa County, CA: home electricity prices of 31.70 cents per kWh.
In Contra Costa County, community choice aggregators may change the generation charge. See how to compare suppliers.
Contra Costa County, CA on the map
Contra Costa County, CA darker: more storm events
Outage risk in Contra Costa County, CA
Contra Costa County, CA, NWS storm events 2015 to 2025: 210 in all, 18.1 per 100,000 residents of 1,161,458, rank 21 of 56 California counties. Property damage in Contra Costa County, CA: $285K, with 3 direct injuries or deaths.
Events by year in Contra Costa County, CA
events a year, Contra Costa County, CA
- 17'15
- 1'16
- 20'17
- 7'18
- 49'19
- 27'20
- 32'21
- 21'22
- 19'23
- 8'24
- 9'25
Events by type
| Contra Costa County, CA | FEMA | Score | Rank | Events | Peak | Damage |
|---|---|---|---|---|---|---|
| Contra Costa County, CA, thunderstorm and high wind | Relatively Low | 34.4 | 10 of 58 | 174 | 2019 (37) | $283K |
| Contra Costa County, CA, tornado | Relatively Low | 49.9 | 10 of 58 | 0 | none | $0 |
| Contra Costa County, CA, winter storm and heavy snow | Very Low | 9.2 | 35 of 58 | 0 | none | $0 |
| Contra Costa County, CA, heat wave | Relatively High | 98.3 | 9 of 58 | 23 | 2022 (12) | $0 |
Contra Costa County, CA, no score or events: hurricane and tropical storm, ice storm.
ZIP codes in Contra Costa County, CA
- 94505
- 94506
- 94507
- 94509
- 94511
- 94513
- 94514
- 94516
- 94517
- 94518
- 94519
- 94520
- 94521
- 94523
- 94525
- 94526
- 94528
- 94530
- 94531
- 94547
- 94548
- 94549
- 94551
- 94553
- 94556
- 94561
- 94563
- 94564
- 94565
- 94569
- 94572
- 94575
- 94582
- 94583
- 94588
- 94595
- 94596
- 94597
- 94598
- 94707
- 94708
- 94801
- 94803
- 94804
- 94805
- 94806
Electric utilities in Contra Costa County, CA
| Utility listed for Contra Costa County, CA | Type | Home price ¢/kWh | Yearly bill at 503 kWh | Share of Contra Costa County, CA median income of $125,727 |
|---|---|---|---|---|
| Pacific Gas & Electric Co. in Contra Costa County, CA | Investor Owned | 31.70 | $1,914 | 1.52% |
Prices are statewide utility averages, not a county price. Community choice aggregators may change the generation part of your bill.
Facts about Contra Costa County, CA
- Residents of Contra Costa County, CA, ACS 2023
- 1,161,4589 of 58 California counties
- Households in Contra Costa County, CA
- 411,6622.82 people each
- Owner-occupied homes in Contra Costa County, CA
- 67.7%278,509 owner and 133,153 renter households
- Median household income in Contra Costa County, CA
- $125,7276 of 58 California counties
- Housing units in Contra Costa County, CA
- 426,58514,923 vacant or seasonal, 3.5% of the units
- Homes heated by electricity in Contra Costa County, CA
- 27.6%113,453 homes, 28 of 58 California counties
- Utilities listed for Contra Costa County, CA
- 11 with a home price: Pacific Gas & Electric Co.
- Home price in Contra Costa County, CA
- 31.70 ¢/kWhPacific Gas & Electric Co.
- ZIP areas touching Contra Costa County, CA
- 4694505 to 94806
- Outage-linked storm events in Contra Costa County, CA
- 210NWS storm events, 2015 to 2025
- Homes built before 1980 in Contra Costa County, CA
- 53.8%median year built 1978
- Flood claims in Contra Costa County, CA
- 178NFIP 2015 to 2025, $5.6M paid
- Home energy burden in Contra Costa County, CA
- 1.6%$1,781 a year on electricity (DOE LEAD)
Electricity price since 2015 in Contra Costa County, CA
Pacific Gas & Electric Co. charged Contra Costa County, CA homes 17.57 ¢/kWh in 2015. Contra Costa County, CA: 31.70 ¢ in 2024, 80% up. Contra Costa County, CA: against 88% up for the California average.
Contra Costa County, CA: a 503 kWh month at that price. Contra Costa County, CA: $88 in 2015, $160 in 2024. Contra Costa County, CA: $1,914 a year, 1.5% of the $125,727 median income.
Contra Costa: 10 yearly prices
| Year | Pacific Gas & Electric Co., Contra Costa County, CA | Contra Costa: Gap to California average | Contra Costa: Gap to U.S. average |
|---|---|---|---|
| 2015, Contra Costa | 17.57 | +0.58 | +4.92 |
| 2016, Contra Costa | 19.46 | +2.07 | +6.91 |
| 2017, Contra Costa | 20.22 | +1.91 | +7.33 |
| 2018, Contra Costa | 20.37 | +1.53 | +7.50 |
| 2019, Contra Costa | 18.64 | -0.51 | +5.63 |
| 2020, Contra Costa | 19.70 | -0.75 | +6.55 |
| 2021, Contra Costa | 22.47 | -0.35 | +8.81 |
| 2022, Contra Costa | 24.66 | -1.18 | +9.62 |
| 2023, Contra Costa | 25.96 | -3.55 | +9.96 |
| 2024, Contra Costa | 31.70 | -0.27 | +15.22 |
Contra Costa County, CA: EIA-861 home prices, 2015 to 2024, not a Contra Costa County, CA price.
CSVHousing and heating in Contra Costa County, CA
Contra Costa County, CA: 229,489 of 426,585 homes were built before 1980 and 75,726 in 2000 or later. Contra Costa County, CA has 287,782 detached houses, 70,533 homes in 5+ unit buildings, 6,660 mobile homes, and 133,153 of 411,662 households rent.
Age of homes in Contra Costa County, CA
% of homes by decade built, Contra Costa County, CA
- 4pre-40
- 740s
- 1350s
- 1360s
- 1870s
- 1680s
- 1390s
- 1200s
- 510s
- 120+
Heating fuel in Contra Costa County, CA
| Contra Costa County, CA | Value | State median | Gap | Rank (1 = highest) |
|---|---|---|---|---|
| Contra Costa County, CA, median year built | 1978 | 1980 | -2 years | 37 of 58 |
| Contra Costa County, CA, built before 1980 | 53.8% | 49.4% | +4.4 points | 22 of 58 |
| Contra Costa County, CA, built 2000 or later | 17.8% | 18.7% | -0.9 points | 33 of 58 |
| Contra Costa County, CA, detached houses | 67.5% | 69.9% | -2.5 points | 37 of 58 |
| Contra Costa County, CA, apartments in 5+ unit buildings | 16.5% | 11.4% | +5.2 points | 15 of 58 |
| Contra Costa County, CA, mobile homes | 1.6% | 6.1% | -4.5 points | 55 of 58 |
| Contra Costa County, CA, renter households | 32.3% | 36.9% | -4.5 points | 40 of 58 |
| Contra Costa County, CA, median home value | $830,800 | $453,950 | +$376,850 | 9 of 58 |
| Contra Costa County, CA, median gross rent a month | $2,322 | $1,528 | +$794 | 6 of 57 |
| Contra Costa County, CA, people per household | 2.79 | 2.74 | +0.05 | 26 of 58 |
Cost of living with electricity in Contra Costa County, CA
Contra Costa County, CA: electricity $1,781 a year per home (DOE LEAD), all home energy $2,585, 1.6% of $158,366 income. 408,537 households in Contra Costa County, CA spend about $727.6 million a year on electricity and $1.1 billion on all home energy. Lower-income homes in Contra Costa County, CA ($21,986 a year) spend 7.5% of income, 4.6 times the all-home figure.
Energy burden in Contra Costa County, CA
| Contra Costa County, CA | Homes | Income | Power | Gas | Other | Burden |
|---|---|---|---|---|---|---|
| Contra Costa County, CA, all households | 408,537 | $158,366 | $1,781 | $793 | $11 | 1.6% |
| Contra Costa County, CA, lower income | 73,146 | $21,986 | $1,238 | $403 | $6 | 7.5% |
| Contra Costa County, CA, owners | 274,388 | $192,654 | $2,053 | $1,022 | $13 | 1.6% |
| Contra Costa County, CA, renters | 134,149 | $88,233 | $1,225 | $324 | $5 | 1.8% |
Flood claims and flood insurance in Contra Costa County, CA
Contra Costa County, CA: 178 NFIP flood claims in 2015 to 2025, $5.6M paid, median paid claim $18,377.
2,681 of 310,943 residential structures in Contra Costa County, CA carry an NFIP contract. 3,231 NFIP policies of any type were in force in Contra Costa County, CA on 8 Sep 2026. Contra Costa County, CA lists 76 repetitive-loss properties, 8 of them severe repetitive loss.
Contra Costa County, CA: claims history, not an outage count.
Flood claims by year in Contra Costa County, CA
flood claims a year, Contra Costa County, CA
- <5'15
- 8'16
- 60'17
- <5'18
- 12'19
- 0'20
- 18'21
- 38'22
- 30'23
- 5'24
- <5'25
| Contra Costa County, CA | Value | Median county | Rank (1 = highest) |
|---|---|---|---|
| Contra Costa County, CA, claims 2015-2025 | 178 | — | 14 of 50 |
| Contra Costa County, CA, paid 2015-2025 | $5.6M | — | 12 of 50 |
| Contra Costa County, CA, median paid claim | $18,377 | — | — |
| Contra Costa County, CA, claims per 1,000 homes | 0.6 | 0.8 | 30 of 50 |
| Contra Costa County, CA, homes with flood insurance | 0.9% | 1.0% | 31 of 56 |
| Contra Costa County, CA, policies in force | 3,231 | — | — |
| Contra Costa County, CA, repetitive-loss properties | 76 | — | — |
Contra Costa County, CA: OpenFEMA NFIP, claims as of 8 Sep 2026, insured share as of 3 Aug 2026; counts under 5 are hidden.
Contra Costa County, CA: flood claims by state, flood hub.
Climate and electric heating in Contra Costa County, CA
Contra Costa County, CA totals 2,549 heating degree days and 881 cooling degree days a year (1991-2020 normal).
For heating, Contra Costa County, CA is the 44th coldest of 58 counties in California: 2,549 against a median of 3,018. For cooling, Contra Costa County, CA is the 27th hottest: 881 against a median of 838.
Contra Costa County, CA is mild both ways, with neither season past 2,549 degree days.
Contra Costa County, CA: 2,388 heating degree days in 2016-2025, 2,549 on the normal, 6% under.
In Contra Costa County, CA, 27.6% of 411,662 homes heat with electricity; the other 72.4% use another main heating fuel.
| Contra Costa County, CA | Value | CA median county | Contra Costa County, CA, rank (1 = highest) |
|---|---|---|---|
| Contra Costa County, CA, heating degree days, 1991-2020 normal | 2,549 | 3,018 | 44 of 58 |
| Contra Costa County, CA, heating degree days, 2016-2025 mean | 2,388 | 2,872 | 44 of 58 |
| Contra Costa County, CA, cooling degree days, 1991-2020 normal | 881 | 838 | 27 of 58 |
| Contra Costa County, CA, cooling degree days, 2016-2025 mean | 1,048 | 1,022 | 27 of 58 |
| Contra Costa County, CA, electric heating, ACS 2019-2023 | 27.6% | 26.8% | 28 of 58 |
Contra Costa County, CA: ACS B25040, 411,662 homes; NOAA nClimDiv, retrieved 7 Oct 2026.
Analyst note on Contra Costa County, CA
Contra Costa County, CA touches 46 ZIP areas, 94505 to 94806, about 25,249 residents each. Contra Costa County, CA counts 1,161,458 residents in 411,662 households. Household income in Contra Costa County, CA is $125,727; 278,509 of its 411,662 households own.
113,453 of the 411,662 homes in Contra Costa County, CA heat with electricity. Contra Costa County, CA has 426,585 housing units, 14,923 (3.5%) vacant or seasonal, and 133,153 rented homes. Contra Costa County, CA logged 210 storm events for its 1,161,458 residents.
The median home in Contra Costa County, CA dates from 1978. Homes in Contra Costa County, CA pay $1,781 a year for electricity.
Bill and heat pump calculator, Contra Costa County, CA
Compare Contra Costa County, CA with its neighbours
- Alameda County sits 14 miles south of Contra Costa County, CA, with 1,651,949 residents against 1,161,458 there, 210 storm events against 210, median home built 1969 against 1978, energy burden 1.3% against 1.6%, income $126,240 against $125,727.
- Solano County sits 22 miles north of Contra Costa County, CA, with 450,824 residents against 1,161,458 there, median home built 1982 against 1978, energy burden 2.1% against 1.6%, income $99,994 against $125,727.
- San Francisco County sits 22 miles southwest of Contra Costa County, CA, with 836,321 residents against 1,161,458 there, 59 storm events against 210, median home built 1945 against 1978, energy burden 0.8% against 1.6%, income $141,446 against $125,727.
- San Mateo County sits 34 miles south of Contra Costa County, CA, with 745,100 residents against 1,161,458 there, 303 storm events against 210, median home built 1966 against 1978, energy burden 1.2% against 1.6%, income $156,000 against $125,727.
- Napa County sits 37 miles north of Contra Costa County, CA, with 136,070 residents against 1,161,458 there, 101 storm events against 210, median home built 1976 against 1978, energy burden 1.9% against 1.6%, income $108,970 against $125,727.
Cities in Contra Costa County, CA
- Concord electricity rates124,260 residents
- Antioch electricity rates115,759 residents
- Richmond electricity rates115,396 residents
- San Ramon electricity rates85,734 residents
- Pittsburg electricity rates75,868 residents
- Walnut Creek electricity rates69,790 residents
- Brentwood electricity rates64,609 residents
- Oakley electricity rates44,311 residents
- Danville electricity rates43,426 residents
- Martinez electricity rates36,926 residents
- Pleasant Hill electricity rates34,335 residents
- San Pablo electricity rates31,771 residents
California: home prices since 2001, planned plants.
Questions on Contra Costa County, CA
Contra Costa County, CA: what do homes pay for electricity?
Contra Costa County, CA homes paid 31.70 cents per kWh in 2024 across 1 listed utility: $160 a month at 503 kWh, 1.52% of Contra Costa County, CA income. In Contra Costa County, CA, community choice aggregators may change the generation charge.
Contra Costa County, CA: how many homes heat with electricity?
Contra Costa County, CA: 113,453 of 411,662 occupied homes, 27.6%, rank 28 of 58.
Contra Costa County, CA: median household income?
$125,727 in Contra Costa County, CA, rank 6 of 58; 1,161,458 residents, 411,662 households.
Contra Costa County, CA: outage-linked storms since 2015?
Contra Costa County, CA: 210 NWS events, peak year 2019.
Contra Costa County, CA: flood insurance claims since 2015?
Contra Costa County, CA: 178 NFIP flood claims, $5.6M paid, 0.6 per 1,000 homes, 0.9% of homes insured.
How old are the homes in Contra Costa County, CA?
Contra Costa County, CA: median home built 1978; 53.8% predate 1980, 67.5% detached, 16.5% in 5+ unit buildings.
Contra Costa County, CA: share of income for energy?
Contra Costa County, CA homes spend $1,781 a year on electricity, $2,585 on all energy: 1.6% of $158,366; 7.5% for lower incomes.