La Marque, Texas electricity: TNMP wires, 2 split ZIP codes to check
La Marque sits on TNMP's wires, with a few split ZIP codes. Below: ZIP by ZIP, who can shop, and what plans cost this month.
Last updated . Written by Power Hopper. Reviewed by Brent Ward, founder, on 2026-10-19. Data as of October 5, 2026 (meters) and October 19, 2026 (plan prices).
In short: La Marque homes in ERCOT's competitive data are on TNMP's wires (6,258) and CenterPoint's wires (1,868). 2 of La Marque's ZIP codes are split, so most addresses can shop, but yours needs a check.
Who delivers electricity in La Marque?
Outages: TNMP at tnmp.com.
TNMP delivery charges and area · CenterPoint delivery charges and area
Can every address in La Marque choose an electricity provider?
8,126 of 8,126 La Marque-addressed competitive homes (100%) are in split ZIP codes (77568, 77510), where a neighbor may have a different utility.
1 more utility (co-op, city-owned or non-ERCOT; EIA 2024) also serves parts of Galveston County; no retail choice there unless the utility opted in.
Moving to La Marque
Local numbers for setting up a home in La Marque, each checked on the official source. More contacts, and a printable list, are on La Marque helpful move-in information.
- Water and utility billing: utility billing (start, transfer or stop water service), 409-938-9209.
- Trash pickup: WM (Waste Management): trash and recycling, 800-800-5804.
- Natural gas: CenterPoint Energy: gas customer service (Houston area), 713-659-2111.
- Public schools: Texas City ISD, Hitchcock ISD, Santa Fe ISD.
- Driver license: Texas DPS Driver License Office: Texas City, 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 La Marque 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 La Marque
Typical weather near La Marque, from the nearest NOAA station with a complete 1991-2020 record: Houston Nwso, about 9 miles from the city center (station elevation 19 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, 46°F. Average daily highs reach 90°F or more in June 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 592 for the month, and heating-degree days (below 65°F) peak in January at 337. 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 | 46 | 4.8 | 20 | 337 |
| Feb | 67 | 50 | 3.0 | 34 | 213 |
| Mar | 73 | 56 | 3.3 | 87 | 109 |
| Apr | 78 | 61 | 4.2 | 174 | 28 |
| May | 85 | 69 | 5.1 | 375 | 1 |
| Jun | 90 | 75 | 6.5 | 520 | 0 |
| Jul | 92 | 76 | 4.4 | 586 | 0 |
| Aug | 92 | 76 | 6.6 | 592 | 0 |
| Sep | 88 | 72 | 7.3 | 453 | 0 |
| Oct | 82 | 63 | 5.8 | 244 | 22 |
| Nov | 73 | 53 | 4.5 | 81 | 142 |
| Dec | 66 | 47 | 4.5 | 34 | 294 |
Historical weather records for Galveston County
The Texas Railroad Commission's county table lists a record low of 7°F (1899) and a record high of 106°F (2000), and a regional estimate of 18 consecutive hours as a typical longest freezing or frozen-precipitation period for Galveston County. These are historical county extremes, not La Marque'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 La Marque, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00414333; Texas Railroad Commission, Historical Weather Data by County (2022).
What is different about electricity in La Marque?
- The Census Bureau's July 1, 2025 estimate for La Marque is 20,324 people, up 10.6% on the 2020 estimates base of 18,380. The largest one-year change was +574 people, from July 2023 to July 2024. (Census)
- Of the 242,585 homes TNMP serves on the competitive market, 3.3% have a La Marque mailing address. (ERCOT)
- ERCOT's daily files for Oct. 7-18, 2026 show 22 brand-new residential meters across La Marque's main ZIP codes (22 of them in 77568) and 15 meters going from vacant to active. (ERCOT)
- 527 of the 9,736 home meters in La Marque's main ZIP codes (5.4%) were de-energized on October 5, 2026, typically a vacant unit awaiting its next account. (ERCOT)
- Nearly all La Marque-addressed competitive homes (8,126) are in one ZIP code, 77568, which it shares with Texas City (1,083 homes). ZIP-wide, ERCOT counts 9,209 competitive meters for 9,006 Census households, a 1.02 ratio. (ERCOT, Census)
- By competitive homes on its postal city, La Marque is number 8 of the 11 cities and towns touching Galveston County, just behind Santa Fe (9,111). (ERCOT)
- In 77568, the ZIP holding most La Marque homes, the ACS 2020-2024 survey finds a median household income of $74,694, 28.0% renters and 29.7% of households with $250+ monthly electric bills. (Census)
- By land area, 82% of La Marque lies in ZIP 77568 and 12% in 77563 (Census 2020 ZCTA-to-place file); 3 ZIP codes cover at least 5% of the city each. (Census)
- Of La Marque's six nearest towns, League City has the most competitive homes (40,501, 11 mi away) and League City the fewest per household (0.94). (ERCOT, Census)
La Marque electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 20,324 |
| Population (2020 estimates base) | 18,380 |
| Occupied households (ACS 2020-2024) | 7,396 |
| Active residential meters with a La Marque address | 8,126 |
| Active business meters with a La Marque address | 1,108 |
| Residential meters per Census household | 1.1 |
| Delivery utilities (homes) | TNMP 6,258; CenterPoint 1,868 |
| Counties | Galveston |
| ZIP codes touching La Marque | 3 |
| Split ZIP codes (flagged below) | 2 |
How we built these numbers. Download: La Marque ZIP table (CSV).
What do electricity plans cost in La Marque right now?
Same-day medians for TNMP’s area (TNMP: 166; CenterPoint: 173 listings), delivery included; not a quote.
La Marque ZIP codes: how much of each is on the competitive market?
Not every address in these ZIP codes has retail choice; check your exact address.
| ZIP | La Marque homes | Land in La Marque | Postal cities | Competitive homes (ERCOT) | Households (Census) | Ratio | What it means |
|---|---|---|---|---|---|---|---|
| 77568 | 8,126 | 77% | La Marque 88%, Texas City 12% | 9,209 | 9,006 | 1.02 | Split. Near-full coverage. Two delivery utilities: TNMP 7,341, CenterPoint 1,868 homes. 22 new residential meters Oct 7-18, 2026. |
| 77510 | 0 | 3% | Santa Fe 97%, Texas City 3% | 6,643 | 5,441 | 1.22 | Split. Near-full coverage. Two delivery utilities: CenterPoint 6,413, TNMP 230 homes. Mostly outside La Marque city limits. |
| 77563 | 0 | 4% | Hitchcock 100% | 4,895 | 4,052 | 1.21 | Near-full coverage. Mostly outside La Marque city limits. |
Split ZIP codes for La Marque: 77568, 77510.
Homes, renters and electric bills in La Marque’s ZIP codes
$250+ monthly electric bills peak in 77568 (29.7% of households); post-2020 homes in 77568 (9.9%).
| ZIP | La Marque homes | Median income | Renters | 5+ units | $250+ bills | Built 2020+ | New meters | Vacant to active |
|---|---|---|---|---|---|---|---|---|
| 77568 | 8,126 | $74,694 | 28.0% | 8.2% | 29.7% | 9.9% | 22 | 15 |
ACS 2020-2024 by ZCTA; meters: ERCOT daily files, Oct 7-18, 2026.
How do towns near La Marque compare?
| Town (2,000+ people) | Miles | Competitive homes | Per household | Utility | Status |
|---|---|---|---|---|---|
| Hitchcock | 6 mi | 4,895 | 1.80 | CenterPoint | Most addresses can choose |
| Santa Fe | 7 mi | 9,111 | 1.94 | CenterPoint | Most addresses can choose |
| Dickinson | 7 mi | 16,662 | 2.16 | TNMP | Most addresses can choose |
| Texas City | 8 mi | 24,149 | 1.11 | TNMP | Most addresses can choose |
| League City | 11 mi | 40,501 | 0.94 | TNMP | Most addresses can choose |
| Kemah | 11 mi | 4,577 | 5.00 | CenterPoint | Most addresses can choose |
Business electricity in La Marque
La Marque business meters: 1,108 (7.3 homes per business meter); large non-residential meters in La Marque’s main ZIP codes: 3 (ERCOT, October 5, 2026).
We compare retail providers and direct suppliers and can bid out high-consumption accounts, but we can’t promise savings or how many suppliers will bid. Businesses in Texas retail-choice areas can request a rate review online.
How do I compare electricity plans in La Marque?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in La Marque
Is La Marque deregulated for electricity?
Yes, where TNMP or CenterPoint's wires reach the house, which in La Marque is most of the city: 8,126 homes with a La Marque mailing address were on the competitive market on October 5, 2026, 1.1 for each Census household. Split ZIP codes for La Marque: 77568, 77510; on those, check the exact address.
What is the biggest La Marque ZIP code for electricity customers?
77568, with 9,209 competitive homes in ERCOT's data (8,126 addressed to La Marque) against roughly 9,006 Census households, a 1.02 ratio.
How many businesses in La Marque are on the competitive electricity market?
Yes, where TNMP delivers: 1,108 La Marque-addressed business meters are on the competitive market in ERCOT's data, and large accounts can also buy from commercial suppliers directly.
How do I start electric service at a new La Marque address?
Start with the address check: TNMP-delivered La Marque homes choose among the plans offered there and set a start date. Turnover is real in 77568, where 18.3% moved in the past year (ACS); ERCOT logged 15 vacant-to-active meters in 77568 Oct. 7-18, 2026.
Who restores power in La Marque after an outage?
The delivery utility for your street. ERCOT puts La Marque homes on TNMP (6,258 homes) and CenterPoint (1,868 homes) wires; your retail provider does not run the lines.
Where to next?
Up: TNMP area · CenterPoint area · Galveston County
Nearest town pages: Dickinson · Texas City · League City · Galveston · Alvin · Friendswood · La Porte · Pasadena
Compare plans · Moving · High bill · Texas rates · Areas without retail choice · Methodology
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 (B25003 households, B01003 population)
- 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)
BJW Ventures LLC d/b/a Power Hopper | PUCT BR260201. PUCT registration is not an endorsement.