Tomball, Texas electricity: CenterPoint wires and 44,571 competitive homes
Tomball sits on CenterPoint's wires. 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: ERCOT counts 44,571 active residential meters with a Tomball address, all on CenterPoint's wires (October 5, 2026). Nearly every Tomball address in our data is on CenterPoint's wires and can pick a retail provider.
Who delivers electricity in Tomball?
Outages: CenterPoint at centerpointenergy.com/outage.
CenterPoint delivery charges and area
Can every address in Tomball choose an electricity provider?
None of the ZIP codes holding Tomball's 44,571 competitive homes is flagged split, so most Tomball streets can shop.
4 more utilities (co-op, city-owned or non-ERCOT; EIA 2024) also serve parts of Harris County · Montgomery County; no retail choice there unless the utility opted in.
Moving to Tomball
Local numbers for setting up a home in Tomball, each checked on the official source. More contacts, and a printable list, are on Tomball helpful move-in information.
- Water and utility billing: utility billing (start, transfer or stop water service), 281-351-5484.
- Trash pickup: Frontier Waste Solutions: trash and recycling, 936-258-9035.
- Natural gas: CenterPoint Energy: gas customer service (Houston area), 713-659-2111.
- Public schools: Tomball ISD.
- Driver license: Texas DPS Driver License Office: Spring Mega Center (Houston Metro Area), 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 Tomball 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 Tomball
Typical weather near Tomball, from the nearest NOAA station with a complete 1991-2020 record: Houston Hooks Mem Airport, about 4 miles from the city center (station elevation 152 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, 43°F. Average daily highs reach 90°F or more in June to September. 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 604 for the month, and heating-degree days (below 65°F) peak in January at 389. 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 | 63 | 43 | 3.5 | 16 | 389 |
| Feb | 68 | 47 | 2.7 | 32 | 252 |
| Mar | 74 | 53 | 3.4 | 82 | 132 |
| Apr | 80 | 59 | 3.8 | 167 | 37 |
| May | 87 | 67 | 4.9 | 368 | 2 |
| Jun | 92 | 73 | 5.4 | 525 | 0 |
| Jul | 94 | 75 | 3.7 | 603 | 0 |
| Aug | 95 | 74 | 4.9 | 604 | 0 |
| Sep | 91 | 70 | 5.2 | 450 | 0 |
| Oct | 82 | 60 | 5.6 | 217 | 32 |
| Nov | 72 | 50 | 4.0 | 57 | 177 |
| Dec | 65 | 44 | 3.7 | 26 | 348 |
Historical weather records for Harris County
The Texas Railroad Commission's county table lists a record low of 5°F (1940) and a record high of 111°F (2000), and a regional estimate of 18 consecutive hours as a typical longest freezing or frozen-precipitation period for Harris County. These are historical county extremes, not Tomball'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 Tomball, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USW00053910; Texas Railroad Commission, Historical Weather Data by County (2022).
What is different about electricity in Tomball?
- Tomball counted about 15,768 residents in the Census Bureau's 2025 estimate, against 12,310 in the 2020 base, a change of +28.1%. The largest one-year change was +926 people, from July 2021 to July 2022. (Census)
- Mailing addresses stretch past city limits here. 44,571 competitive residential meters use Tomball as their postal city, while the city itself has 5,213 Census households, a ratio of 8.55. The Census household count (ACS 2020-2024) also lags a city that grew 28% since 2020. (ERCOT, Census)
- Of the 2,585,110 homes CenterPoint serves on the competitive market, 1.7% have a Tomball mailing address. (ERCOT)
- Tomball is still adding homes: 17 new residential meters in its main ZIP codes during Oct. 7-18, 2026 (most in 77377: 14), plus 110 vacant-to-active switches. (ERCOT)
- De-energized homes, usually empty or between tenants, number 1,828 in Tomball's main ZIP codes, 3.8% of all 47,817 residential meters there. (ERCOT)
- ZIP 77375 holds 26,190 of the 44,571 competitive homes with a Tomball address (59%); across the whole ZIP there are 1.12 competitive meters per Census household. (ERCOT, Census)
- By competitive homes on its postal city, Tomball is number 8 of the 22 cities and towns touching Harris County, just behind Missouri City (47,550). (ERCOT)
- 30.2% of households in 77375 rent (ACS 2020-2024), the most among Tomball's main ZIP codes, so a lot of Tomball electricity accounts open and close with each lease. (Census)
- Median household income across Tomball's main ZIP codes runs from $102,488 in 77375 to $129,327 in 77377 (ACS 2020-2024); 37.9% of 77377 households and 33.1% of 77375 households report $250+ monthly electric bills. (Census)
- By land area, 89% of Tomball lies in ZIP 77375 and 11% in 77377 (Census 2020 ZCTA-to-place file); 2 ZIP codes cover at least 5% of the city each. (Census)
Tomball electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 15,768 |
| Population (2020 estimates base) | 12,310 |
| Occupied households (ACS 2020-2024) | 5,213 |
| Active residential meters with a Tomball address | 44,571 |
| Active business meters with a Tomball address | 6,117 |
| Residential meters per Census household | 8.55 |
| Delivery utilities (homes) | CenterPoint 44,571 |
| Counties | Harris, Montgomery |
| ZIP codes touching Tomball | 2 |
| Split ZIP codes (flagged below) | 0 |
How we built these numbers. Download: Tomball ZIP table (CSV).
What do electricity plans cost in Tomball right now?
Same-day medians for CenterPoint’s area (CenterPoint: 173 listings), delivery included; not a quote.
| Delivery utility | 500 kWh | 1,000 kWh | 2,000 kWh | Delivery charge |
|---|---|---|---|---|
| CenterPoint | 14¢ | 13.2¢ | 13¢ | 6.5333¢/kWh + $4.90/mo (effective October 1, 2026; tariff) |
Tomball 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 | Tomball homes | Land in Tomball | Postal cities | Competitive homes (ERCOT) | Households (Census) | Ratio | What it means |
|---|---|---|---|---|---|---|---|
| 77375 | 26,190 | 33% | Tomball 95%, The Woodlands 5% | 27,608 | 24,681 | 1.12 | Near-full coverage. |
| 77377 | 18,381 | 4% | Tomball 100% | 18,381 | 13,449 | 1.37 | Near-full coverage. 14 new residential meters Oct 7-18, 2026. Mostly outside Tomball city limits. |
Split ZIP codes for Tomball: none flagged.
Homes, renters and electric bills in Tomball’s ZIP codes
$250+ monthly electric bills peak in 77377 (37.9% of households); renters in 77375 (30.2%); post-2020 homes in 77375 (7.9%).
| ZIP | Tomball homes | Median income | Renters | 5+ units | $250+ bills | Built 2020+ | New meters | Vacant to active |
|---|---|---|---|---|---|---|---|---|
| 77375 | 26,190 | $102,488 | 30.2% | 14.9% | 33.1% | 7.9% | 3 | 49 |
| 77377 | 18,381 | $129,327 | 15.7% | 9.3% | 37.9% | 6.4% | 14 | 61 |
ACS 2020-2024 by ZCTA; meters: ERCOT daily files, Oct 7-18, 2026.
How do towns near Tomball compare?
| Town (2,000+ people) | Miles | Competitive homes | Per household | Utility | Status |
|---|---|---|---|---|---|
| Magnolia | 11 mi | 34,759 | 21.50 | CenterPoint | Most addresses can choose |
| Oak Ridge North | 11 mi | 0 | n/a | CenterPoint | Partly |
| Shenandoah | 12 mi | 0 | n/a | — | Few or none can choose |
| Jersey Village | 14 mi | 0 | n/a | CenterPoint | Most addresses can choose |
| Conroe | 18 mi | 758 | 0.02 | — | Few or none can choose |
| Waller | 19 mi | 6,447 | 5.61 | CenterPoint | Most addresses can choose |
Business electricity in Tomball
Tomball business meters: 6,117 (7.3 homes per business meter); large non-residential meters in Tomball’s main ZIP codes: 8 (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 Tomball?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in Tomball
Does Tomball have electricity choice?
Yes, where CenterPoint's wires reach the house, which in Tomball is most of the city: 44,571 homes with a Tomball mailing address were on the competitive market on October 5, 2026, 8.55 for each Census household. None of Tomball's ZIP codes is flagged split, though an address check is still the only sure answer.
What is the biggest Tomball ZIP code for electricity customers?
77375, with 27,608 competitive homes in ERCOT's data (26,190 addressed to Tomball) against roughly 24,681 Census households, a 1.12 ratio.
How many Tomball households have a $250 electric bill?
In 77377, 37.9% of households reported electricity bills of $250 or more a month in the ACS 2020-2024 survey, the highest among Tomball's main ZIP codes; in 77375 it was 33.1%. House size and heating type explain much of the difference.
I'm moving to Tomball. How do I set up electricity?
13.0% of 77375 residents moved within a year (ACS), and 61 77377 meters turned from vacant to active Oct. 7-18, 2026. Check that your Tomball address is on CenterPoint's wires, then choose a plan and start date.
Why are there more electric meters than households in Tomball?
44,571 Tomball-addressed meters against 5,213 city households is 8.55 per household: the Tomball postal area extends past city limits, and new homes get meters before the Census counts them. It doesn't mean every nearby address can choose.
Where do I report a Tomball power outage?
Call CenterPoint (centerpointenergy.com/outage), the wires utility for Tomball's 44,571 competitive homes; a retail provider can't fix lines.
Where to next?
Up: CenterPoint area · Harris County · Montgomery County
Nearest town pages: Spring · Humble · Katy · Houston · Bellaire · Fulshear · Stafford · Sugar Land
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)
- CenterPoint Energy Houston Electric
- CenterPoint delivery tariff (effective October 1, 2026)
BJW Ventures LLC d/b/a Power Hopper | PUCT BR260201. PUCT registration is not an endorsement.