West Columbia, Texas electricity: TNMP wires, 1 split ZIP code to check
TNMP wires, 1 split ZIP code and 3,594 competitive homes: the West Columbia numbers.
Reviewed by Brent Ward, founder, on 2026-10-19. Updated .
West Columbia at a glance: 3,594 West Columbia-addressed homes in ERCOT's Oct. 5 extract: 3,523 on TNMP; 71 on CenterPoint. 1 split ZIP code (77486) holds 3,594 of West Columbia's 3,594 placed homes (100%); those addresses need a lookup.
West Columbia wires and choice
TNMP outages: tnmp.com. TNMP · CenterPoint
1 split ZIP code (77486) holds 3,594 of West Columbia's 3,594 placed homes (100%); those addresses need a lookup.
Non-choice utilities listed by EIA (2024) for Brazoria: 1.
Moving to West Columbia
Local numbers for setting up a home in West Columbia, each checked on the official source. More contacts, and a printable list, are on West Columbia helpful move-in information.
- City hall (ask about water service): City of West Columbia: City Hall (main line), 979-345-3123.
- Natural gas: CenterPoint Energy: gas customer service (Houston area), 713-659-2111.
- Public schools: Columbia-Brazoria ISD.
- Driver license: Texas DPS Driver License Office: Angleton Driver License Office, 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 West Columbia 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 West Columbia
Typical weather near West Columbia, from the nearest NOAA station with a complete 1991-2020 record: Angleton 2 W, about 12 miles from the city center (station elevation 27 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 92°F; January has the coolest average low, 47°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 587 for the month, and heating-degree days (below 65°F) peak in January at 314. 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 | 64 | 47 | 4.2 | 21 | 314 |
| Feb | 68 | 51 | 2.8 | 38 | 199 |
| Mar | 72 | 56 | 3.2 | 78 | 108 |
| Apr | 77 | 62 | 3.7 | 161 | 34 |
| May | 84 | 70 | 4.2 | 363 | 2 |
| Jun | 89 | 75 | 5.4 | 501 | 0 |
| Jul | 91 | 76 | 4.4 | 577 | 0 |
| Aug | 92 | 76 | 5.1 | 587 | 0 |
| Sep | 88 | 73 | 6.8 | 472 | 0 |
| Oct | 82 | 64 | 4.9 | 268 | 20 |
| Nov | 73 | 55 | 4.2 | 96 | 120 |
| Dec | 67 | 50 | 4.6 | 50 | 248 |
Historical weather records for Brazoria County
The Texas Railroad Commission's county table lists a record low of 5°F (1899) and a record high of 109°F (2000), and a regional estimate of 18 consecutive hours as a typical longest freezing or frozen-precipitation period for Brazoria County. These are historical county extremes, not West Columbia'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 West Columbia, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00410257; Texas Railroad Commission, Historical Weather Data by County (2022).
West Columbia electricity, in numbers and sources
- Land: 2.6 sq mi; 1,394 residents and 551 households per sq mi; 2.53 people per West Columbia household. [Gazetteer; PEP; ACS]
- Heating fuel, West Columbia homes (ACS 2020-2024): electricity 71.3% (±11), utility gas 28.7%; Brazoria County overall: 48.3% electric. All-electric homes feel winter rates more. [ACS]
- Of West Columbia homes paying a power bill, 37.7% report $250 or more a month and 13.8% under $100 (Brazoria County: 36.8% at $250+). [ACS]
- Housing stock: 73.3% detached houses, 5.7% in 5+ unit buildings, 3.2% mobile homes; median year built 1975, 16.2% built 2010 or later. [ACS]
- ERCOT status split for 4,080 West Columbia home meters (Oct. 5, 2026): active 3,594, inactive 267, de-energized 219; idle share 11.9%. [ERCOT]
- 3,594 home meters use the West Columbia postal name, against 1,436 households inside city limits (2.5 per household): the mailing area runs well past the boundary. [ERCOT; ACS]
- 77486 carries every one of West Columbia's placed homes; ratio across the whole ZIP 1.32, from 3,619 home meters in all and 2,748 households. [ERCOT; ACS]
West Columbia homes: heating fuel, bills, housing
| West Columbia | Estimate |
|---|---|
| Heat with electricity | 71.3% |
| Heat with utility gas | 28.7% |
| Bill $250 or more | 37.7% |
| Built 2010 or later | 16.2% |
| Renter households | 39.3% |
| Median year built | 1975 |
ACS 2020-2024, the city (Census boundary). Bill rows are shares of homes that pay an electric bill.
West Columbia meters and households
| Count | West Columbia |
|---|---|
| Residents, July 2025 | 3,636 |
| Residents, 2020 base | 3,634 |
| Households (ACS) | 1,436 |
| Active home meters | 3,594 |
| Inactive home meters | 267 |
| De-energized home meters | 219 |
| Active small-business meters | 697 |
| Active large-business meters | 1 |
| Home meters per household | 2.5 |
| ZIP codes listed | 1 |
| Split ZIP codes | 1 |
| County | Brazoria |
ERCOT report 203, Oct. 5, 2026 (West Columbia postal city) and Census. CSV · Method
West Columbia plan prices, October 19, 2026
Median fixed-rate Power to Choose listings. TNMP (166 listings): 16.1¢ / 15.1¢ / 14.7¢ per kWh at 500 / 1,000 / 2,000 kWh, delivery 7.771¢ + $7.56/mo included. CenterPoint (173 listings): 14¢ / 13.2¢ / 13¢ per kWh at 500 / 1,000 / 2,000 kWh, delivery 6.5333¢ + $4.90/mo included. Not a quote.
West Columbia ZIP codes, row by row
Not every address in these ZIP codes has retail choice; check your exact address.
| ZIP code | West Columbia homes | All ZIP homes | West Columbia share | ZIP households | Share of West Columbia land | Meters per household | Flags |
|---|---|---|---|---|---|---|---|
| 77486 | 3,594 | 3,619 | 99% | 2,748 | 100% | 1.32 | split, 2 wires firms |
West Columbia split ZIP codes: 77486.
Towns around West Columbia
| From West Columbia | Town (2,000+) | Homes vs West Columbia | Wires | Per household | Competitive homes |
|---|---|---|---|---|---|
| 7 mi | Sweeny | 0.9× | TNMP | 2.20 | 3,134 |
| 8 mi | Brazoria | 1.3× | TNMP | 4.14 | 4,733 |
| 13 mi | Angleton | 3.9× | TNMP | 1.76 | 13,929 |
| 14 mi | Lake Jackson | 3.7× | CenterPoint | 1.22 | 13,119 |
| 16 mi | Richwood | 0.0× | — | 0.02 | 38 |
| 17 mi | Clute | 2.1× | CenterPoint | 1.69 | 7,401 |
West Columbia businesses
698 West Columbia-addressed business meters; 1 large-class meters across its main ZIP codes (ERCOT). Request a business rate review.
Compare West Columbia plans
West Columbia questions
Do I get to pick my electric company in West Columbia?
Yes, on TNMP's wires: 3,594 West Columbia homes were on the competitive market Oct. 5, 2026 (2.5 per household). Split: 77486. Confirm your address.
Do West Columbia homes heat with electricity?
71.3% of West Columbia homes heat with electricity (ACS 2020-2024, margin ±11) and 28.7% with utility gas; 37.7% 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 West Columbia?
77486: 3,594 West Columbia-addressed competitive homes; ratio 1.32 across the ZIP (3,619 home meters in all, 2,748 households).
Who handles West Columbia power outages?
Call the wires utility for your street (not the company that bills you): TNMP (3,523 homes); CenterPoint (71 homes).
How do I set up power at a new West Columbia home?
Check the address is on TNMP's wires, choose a plan and a start date. West Columbia had 486 idle home meters (inactive or de-energized) on Oct. 5, 2026, so many move-ins reconnect an existing meter.
Near West Columbia
Wires and county: TNMP · CenterPoint · Brazoria. Nearby pages: Angleton (13 mi) · Brazoria (8 mi) · Clute (17 mi) · Lake Jackson (14 mi) · Needville (21 mi) · Sweeny (7 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)
- Texas-New Mexico Power (TNMP)
- CenterPoint Energy Houston Electric
- TNMP delivery tariff (effective September 13, 2026)
- CenterPoint delivery tariff (effective October 1, 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.