Dickinson, Texas electricity: TNMP wires, 1 split ZIP code to check
Dickinson 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: Dickinson homes in ERCOT's competitive data are on TNMP's wires (11,579) and CenterPoint's wires (5,083). 1 of Dickinson's ZIP codes is split, so most addresses can shop, but yours needs a check.
Who delivers electricity in Dickinson?
Outages: TNMP at tnmp.com.
TNMP delivery charges and area · CenterPoint delivery charges and area
Can every address in Dickinson choose an electricity provider?
16,656 of 16,656 Dickinson-addressed competitive homes (100%) are in split ZIP codes (77539), 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 Dickinson
Local numbers for setting up a home in Dickinson, each checked on the official source. More contacts, and a printable list, are on Dickinson helpful move-in information.
- Water and utility billing: Dickinson water district (Galveston County WCID): customer service, 281-337-1576.
- Natural gas: CenterPoint Energy: gas customer service (Houston area), 713-659-2111.
- Public schools: Dickinson ISD, Santa Fe ISD.
- Driver license: Texas DPS Driver License Office: League 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 Dickinson 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 Dickinson
Typical weather near Dickinson, from the nearest NOAA station with a complete 1991-2020 record: Houston Nwso, about 2 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 Dickinson'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 Dickinson, 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 Dickinson?
- Population: 21,419 (2020 base) to 21,908 (July 2025), +2.3%, per Census Vintage 2025 estimates. The largest one-year change was +240 people, from July 2020 to July 2021. (Census)
- Mailing addresses stretch past city limits here. 16,662 competitive residential meters use Dickinson as their postal city, while the city itself has 7,722 Census households, a ratio of 2.16. (ERCOT, Census)
- Dickinson-addressed homes make up 6.9% of the 242,585 residential meters on TNMP's competitive system. (ERCOT)
- ERCOT's daily files for Oct. 7-18, 2026 show 81 brand-new residential meters across Dickinson's main ZIP codes (81 of them in 77539) and 79 meters going from vacant to active. (ERCOT)
- Dickinson's main ZIP codes: 17,623 active and 1,309 de-energized residential meters (6.9% de-energized, usually empty or between tenants). (ERCOT)
- Nearly all Dickinson-addressed competitive homes (16,656) are in one ZIP code, 77539, which it shares with Texas City (917 homes) and League City (43 homes). ZIP-wide, ERCOT counts 17,623 competitive meters for 17,813 Census households, a 0.99 ratio. (ERCOT, Census)
- In 77539, the ZIP holding most Dickinson homes, the ACS 2020-2024 survey finds a median household income of $89,111, 24.3% renters and 36.9% of households with $250+ monthly electric bills. (Census)
- Nearby, League City (4 mi) has 0.94 competitive homes per household, while League City counts 40,501 on its postal city. (ERCOT, Census)
Dickinson electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 21,908 |
| Population (2020 estimates base) | 21,419 |
| Occupied households (ACS 2020-2024) | 7,722 |
| Active residential meters with a Dickinson address | 16,662 |
| Active business meters with a Dickinson address | 1,811 |
| Residential meters per Census household | 2.16 |
| Delivery utilities (homes) | TNMP 11,579; CenterPoint 5,083 |
| Counties | Galveston |
| ZIP codes touching Dickinson | 2 |
| Split ZIP codes (flagged below) | 1 |
How we built these numbers. Download: Dickinson ZIP table (CSV).
What do electricity plans cost in Dickinson right now?
Same-day medians for TNMP’s area (TNMP: 166; CenterPoint: 173 listings), delivery included; not a quote.
Dickinson 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 | Dickinson homes | Land in Dickinson | Postal cities | Competitive homes (ERCOT) | Households (Census) | Ratio | What it means |
|---|---|---|---|---|---|---|---|
| 77539 | 16,656 | 20% | Dickinson 95%, Texas City 5% | 17,623 | 17,813 | 0.99 | Split. Near-full coverage. Two delivery utilities: TNMP 12,540, CenterPoint 5,083 homes. 81 new residential meters Oct 7-18, 2026. |
| 77517 | 0 | 1% | Santa Fe 100% | 2,699 | 1,899 | 1.42 | Near-full coverage. Mostly outside Dickinson city limits. |
Split ZIP codes for Dickinson: 77539.
Homes, renters and electric bills in Dickinson’s ZIP codes
$250+ monthly electric bills peak in 77539 (36.9% of households).
| ZIP | Dickinson homes | Median income | Renters | 5+ units | $250+ bills | Built 2020+ | New meters | Vacant to active |
|---|---|---|---|---|---|---|---|---|
| 77539 | 16,656 | $89,111 | 24.3% | 8.8% | 36.9% | 3.9% | 81 | 79 |
ACS 2020-2024 by ZCTA; meters: ERCOT daily files, Oct 7-18, 2026.
How do towns near Dickinson compare?
| Town (2,000+ people) | Miles | Competitive homes | Per household | Utility | Status |
|---|---|---|---|---|---|
| League City | 4 mi | 40,501 | 0.94 | TNMP | Most addresses can choose |
| Santa Fe | 5 mi | 9,111 | 1.94 | CenterPoint | Most addresses can choose |
| Kemah | 6 mi | 4,577 | 5.00 | CenterPoint | Most addresses can choose |
| Webster | 7 mi | 12,856 | 2.15 | CenterPoint | Most addresses can choose |
| Nassau Bay | 7 mi | 0 | n/a | CenterPoint | Most addresses can choose |
| La Marque | 7 mi | 8,126 | 1.10 | TNMP | Most addresses can choose |
Business electricity in Dickinson
Dickinson business meters: 1,811 (9.2 homes per business meter); large non-residential meters in Dickinson’s main ZIP codes: 5 (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 Dickinson?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in Dickinson
Can I choose my electricity provider in Dickinson?
Yes, where TNMP or CenterPoint's wires reach the house, which in Dickinson is most of the city: 16,662 homes with a Dickinson mailing address were on the competitive market on October 5, 2026, 2.16 for each Census household. Split ZIP codes for Dickinson: 77539; on those, check the exact address.
What is the biggest Dickinson ZIP code for electricity customers?
77539, with 17,623 competitive homes in ERCOT's data (16,656 addressed to Dickinson) against roughly 17,813 Census households, a 0.99 ratio.
How many businesses in Dickinson are on the competitive electricity market?
Yes, where TNMP delivers: 1,811 Dickinson-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 Dickinson address?
Confirm the address is on TNMP's wires, then pick a plan and a start date. In 77539, 13.8% of residents moved in the past year (ACS); 79 77539 meters went vacant-to-active Oct. 7-18, 2026.
Why are there more electric meters than households in Dickinson?
16,662 Dickinson-addressed meters against 7,722 city households is 2.16 per household: the Dickinson 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.
Who restores power in Dickinson after an outage?
The delivery utility for your street. ERCOT puts Dickinson homes on TNMP (11,579 homes) and CenterPoint (5,083 homes) wires; your retail provider does not run the lines.
Where to next?
Up: TNMP area · CenterPoint area · Galveston County
Nearest town pages: League City · La Marque · Friendswood · Texas City · Alvin · La Porte · Pasadena · Deer Park
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.