Fairfield, Texas electricity: Oncor wires and 2,716 competitive homes
2,716 home meters, 1,073 households, 1 ZIP code: Fairfield on Oncor's wires, ZIP by ZIP.
Reviewed by Brent Ward, founder, on 2026-10-19. Updated .
Fairfield at a glance: 2,716 Fairfield-addressed homes, all wired by Oncor (ERCOT, Oct. 5, 2026). Fairfield's 2,698 placed homes sit in unsplit ZIP codes; a lookup still confirms each address.
Fairfield wires and choice
Oncor outages: oncor.com/outages. Oncor
Fairfield's 2,698 placed homes sit in unsplit ZIP codes; a lookup still confirms each address.
Non-choice utilities listed by EIA (2024) for Freestone: 3.
Moving to Fairfield
Local numbers for setting up a home in Fairfield, each checked on the official source. More contacts, and a printable list, are on Fairfield helpful move-in information.
- Water and utility billing: City of Fairfield: utility billing, 903-389-2633.
- Natural gas: Atmos Energy: customer service, 888-286-6700.
- Public schools: Fairfield ISD.
- Driver license: Texas DPS Driver License Office: Fairfield, 512-424-2600.
You enter your address on the next screen, and we confirm there whether you can choose an electricity provider at that address.
Have a High Light Bill or Electric Bill?
If your electricity bill in Fairfield came in higher than you expected, upload or enter it and see whether another plan could lower your electricity costs, or whether staying where you are makes more sense.
Weather and electricity in Fairfield
Typical weather near Fairfield, from the nearest NOAA station with a complete 1991-2020 record: Fairfield 3 W, about 2 miles from the city center (station elevation 432 ft). These are normals for that station, not readings at your address. August is the warmest month on average, with a normal daily high of 95°F; January has the coolest average low, 36°F. Average daily highs reach 90°F or more in July to August. No month averages a daily low at or below freezing.
For electricity, the normals point to two seasons that can lift a household's usage: cooling-degree days (a measure of how far each day's mean temperature sits above 65°F) peak in August at 578 for the month, and heating-degree days (below 65°F) peak in January at 560. How much that matters to a bill depends on the home, its insulation, its heating fuel and the household, so use your own usage history, not a regional average, when you compare plans.
| Month | Avg high °F | Avg low °F | Precipitation (in) | Cooling degree-days | Heating degree-days |
|---|---|---|---|---|---|
| Jan | 58 | 36 | 3.7 | 2 | 560 |
| Feb | 61 | 40 | 3.5 | 8 | 412 |
| Mar | 69 | 47 | 3.8 | 24 | 255 |
| Apr | 76 | 54 | 3.3 | 93 | 90 |
| May | 82 | 64 | 4.7 | 256 | 8 |
| Jun | 89 | 70 | 4.5 | 432 | 0 |
| Jul | 94 | 73 | 1.8 | 567 | 0 |
| Aug | 95 | 72 | 2.9 | 578 | 0 |
| Sep | 88 | 66 | 3.2 | 367 | 4 |
| Oct | 79 | 56 | 4.2 | 146 | 70 |
| Nov | 68 | 45 | 3.9 | 27 | 283 |
| Dec | 60 | 38 | 4.1 | 7 | 512 |
Historical weather records for Freestone County
The Texas Railroad Commission's county table lists a record low of -2°F (1989) and a record high of 110°F (2000), and a regional estimate of 24 consecutive hours as a typical longest freezing or frozen-precipitation period for Freestone County. These are historical county extremes, not Fairfield's monthly averages and not a forecast; the normals above describe ordinary months.
Reference only: the U.S. Energy Information Administration's 2020 Residential Energy Consumption Survey puts the average Texas household at about 13,440 kWh a year (about 1,120 kWh a month if spread evenly). That is a statewide average for 2020, not Fairfield, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00413047; Texas Railroad Commission, Historical Weather Data by County (2022).
Fairfield electricity, in numbers and sources
- Land: 5.5 sq mi; 555 residents and 197 households per sq mi; 2.82 people per Fairfield household. [Gazetteer; PEP; ACS]
- Heating fuel, Fairfield homes (ACS 2020-2024): electricity 76.5% (±5), utility gas 23.0%; Freestone County overall: 74.5% electric. All-electric homes feel winter rates more. [ACS]
- Of Fairfield homes paying a power bill, 36.2% report $250 or more a month and 8.2% under $100 (Freestone County: 41.2% at $250+). [ACS]
- Housing stock: 73.8% detached houses, 7.7% in 5+ unit buildings, 9.4% mobile homes; median year built 1976, 8.0% built 2010 or later. [ACS]
- Fairfield-addressed home meters on Oct. 5, 2026: 2,716 active, 910 inactive, 507 de-energized, so 34.3% were not in use (ERCOT). [ERCOT]
- ACS 2020-2024: 22.5% of Fairfield housing units vacant (±7). Vacant homes keep meters that are not counted as households. [ACS]
- 2,716 home meters use the Fairfield postal name, against 1,073 households inside city limits (2.53 per household): the mailing area runs well past the boundary. [ERCOT; ACS]
- 75840 carries every one of Fairfield's placed homes; ratio across the whole ZIP 1.08, from 2,698 home meters in all and 2,507 households. [ERCOT; ACS]
Fairfield homes: heating fuel, bills, housing
| Fairfield | Estimate |
|---|---|
| Heat with electricity | 76.5% |
| Heat with utility gas | 23.0% |
| Bill $250 or more | 36.2% |
| Built 2010 or later | 8.0% |
| Renter households | 42.5% |
| Median year built | 1976 |
ACS 2020-2024, the city (Census boundary). Bill rows are shares of homes that pay an electric bill.
Fairfield meters and households
| Count | Fairfield |
|---|---|
| Residents, July 2025 | 3,029 |
| Residents, 2020 base | 2,861 |
| Households (ACS) | 1,073 |
| Active home meters | 2,716 |
| Inactive home meters | 910 |
| De-energized home meters | 507 |
| Active small-business meters | 1,235 |
| Active large-business meters | 4 |
| Home meters per household | 2.53 |
| ZIP codes listed | 1 |
| Split ZIP codes | 0 |
| County | Freestone |
ERCOT report 203, Oct. 5, 2026 (Fairfield postal city) and Census. CSV · Method
Fairfield plan prices, October 19, 2026
Median fixed-rate Power to Choose listings. Oncor (170 listings): 14.1¢ / 13.4¢ / 13.2¢ per kWh at 500 / 1,000 / 2,000 kWh, delivery 6.8673¢ + $4.06/mo included. Not a quote.
Fairfield ZIP codes, row by row
Not every address in these ZIP codes has retail choice; check your exact address.
| ZIP code | Fairfield homes | All ZIP homes | Fairfield share | ZIP households | Share of Fairfield land | Meters per household | Flags |
|---|---|---|---|---|---|---|---|
| 75840 | 2,698 | 2,698 | 100% | 2,507 | 100% | 1.08 | none |
Fairfield split ZIP codes: none.
Towns around Fairfield
Fairfield businesses
1,239 Fairfield-addressed business meters; 4 large-class meters across its main ZIP codes (ERCOT). Request a business rate review.
Compare Fairfield plans
Fairfield questions
Do I get to pick my electric company in Fairfield?
Mostly. ERCOT counts 2,716 competitive Fairfield home meters, all on Oncor's system, against 1,073 households. An address lookup settles it.
Why are some Fairfield electric bills so high in winter?
76.5% of Fairfield homes heat with electricity (ACS 2020-2024, margin ±5) and 23.0% with utility gas; 36.2% of bill-paying homes report $250 or more a month. Electric-heat homes should compare plans at winter usage.
Which ZIP code covers most of Fairfield?
75840 (2,698 Fairfield homes on the competitive market). Across the full ZIP: 1.08 meters per household, 2,698 home meters in all.
Who handles Fairfield power outages?
Outages go to Oncor (oncor.com/outages), the wires utility for 2,716 Fairfield competitive homes.
How do I set up power at a new Fairfield home?
Check the address is on Oncor's wires, choose a plan and a start date. Fairfield had 1,417 idle home meters (inactive or de-energized) on Oct. 5, 2026, so many move-ins reconnect an existing meter.
Near Fairfield
Wires and county: Oncor · Freestone. Nearby pages: Corsicana (31 mi) · Groesbeck (25 mi) · Malakoff (33 mi) · Mexia (19 mi) · Palestine (31 mi) · Teague (9 mi)
No-choice areas · Methodology · Compare plans
Sources
- ERCOT TDSP ESIID Extract (report 203): full extract as of Oct 5, 2026; daily files Oct 7-18, 2026
- Census ACS 2020-2024 5-year estimates, tables B25040, B25132, B25024, B25034, B25035, B25018, B19013, B25003, B25002, B25004 (90% margins of error)
- Census Vintage 2025 city and town population estimates
- Census 2020 ZCTA-to-place and ZCTA-to-county relationship files
- EIA-861 (2024) utility service territories by county
- PUCT Power to Choose residential offer export, Oct 19, 2026, 7:59 AM CT
- PUCT: Choosing an Electric Plan
- PUCT broker directory (BR260201)
- Oncor Electric Delivery
- Oncor delivery tariff (effective October 4, 2026)
- Census Bureau 2025 Gazetteer Files, Texas places (land and water area)
BJW Ventures LLC d/b/a Power Hopper | PUCT BR260201. PUCT registration is not an endorsement.