# Rockwall, Texas electricity: Oncor wires, 1 split ZIP code to check

_Updated October 19, 2026. Data: ERCOT Oct 5, 2026; Power to Choose Oct 19, 2026, 7:59 AM CT._

**In short:** ERCOT counts 20,168 active residential meters with a Rockwall address, all on Oncor's wires (October 5, 2026). 1 of Rockwall's ZIP codes is split, so most addresses can shop, but yours needs a check.

## Moving to Rockwall

Local numbers for setting up a home in Rockwall, each checked on the official source. More contacts: https://powerhopper.energy/texas-electricity/rockwall/move-in-information

- **Water and utility billing:** utility billing (start, transfer or stop water service), 972-771-7736.
- **Natural gas:** Atmos Energy: customer service, 888-286-6700.
- **Public schools:** Rockwall ISD.
- **Driver license:** Texas DPS Driver License Office: Rockwall, 512-424-2600.

## Who delivers electricity in Rockwall?
ERCOT counts 20,168 active residential meters with a Rockwall address, all on Oncor's wires (October 5, 2026).

## Can every address in Rockwall choose?
5 of 20,168 Rockwall-addressed competitive homes (0%) are in split ZIP codes (75189), where a neighbor may have a different utility.

## What is different about Rockwall?
- The Census Bureau's July 1, 2025 estimate for Rockwall is 53,980 people, up 14.1% on the 2020 estimates base of 47,308. The largest one-year change was +2,048 people, from July 2020 to July 2021. (Source: https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/cities/totals/sub-est2025_48.csv)
- Of the 3,564,530 homes Oncor serves on the competitive market, 0.6% have a Rockwall mailing address. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- From Oct. 7 to Oct. 18, 2026, 22 residential meters in Rockwall's main ZIP codes went from vacant to active in ERCOT's daily files, which usually means a move-in. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- De-energized homes, usually empty or between tenants, number 1,493 in Rockwall's main ZIP codes, 4.7% of all 31,690 residential meters there. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- Rockwall's biggest ZIP code for electricity customers is 75087, with 11,371 of the 20,168 competitive homes that carry a Rockwall address and a ZIP-wide ratio of 1.12 meters per household. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/)
- Rockwall County context: Rockwall ranks 3 of 10 touching cities and towns for postal-city competitive homes, just behind Rowlett (26,540). (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- Median household income across Rockwall's main ZIP codes runs from $129,484 in 75087 to $135,742 in 75032 (ACS 2020-2024); 45.2% of 75032 households and 38.2% of 75087 households report $250+ monthly electric bills. (Source: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/)
- By land area, 54% of Rockwall lies in ZIP 75087 and 41% in 75032 (Census 2020 ZCTA-to-place file); 2 ZIP codes cover at least 5% of the city each. (Source: https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/)
- Nearby, McLendon-Chisholm (6 mi) has just 0.44 competitive homes per household, while Rowlett counts 26,540 on its postal city. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/)

## By the numbers
- Population (July 1, 2025 estimate): 53,980
- Population (2020 estimates base): 47,308
- Occupied households (ACS 2020-2024): 18,273
- Active residential meters with a Rockwall address: 20,168
- Active business meters with a Rockwall address: 2,913
- Residential meters per Census household: 1.1
- Delivery utilities (homes): Oncor 20,168
- Counties: Rockwall
- ZIP codes touching Rockwall: 3
- Split ZIP codes (flagged below): 1

## Plan prices (median ¢/kWh at 500 / 1,000 / 2,000 kWh)
- Oncor: 14.1 / 13.4 / 13.2; delivery 6.8673¢/kWh + $4.06/mo

## ZIP codes
**Not every address in these ZIP codes has retail choice; check your exact address.**

| ZIP | Postal cities | Land in city | Competitive homes | Households | Ratio | Notes |
|---|---|---|---|---|---|---|
| 75087 | Rockwall 68%, Fate 29%, Rowlett 2% | 54% | 16,724 | 14,951 | 1.12 | Near-full coverage.  |
| 75032 | Rockwall 65%, Heath 30%, Mclendon Chisholm 4% | 25% | 13,473 | 13,250 | 1.02 | Near-full coverage.  |
| 75189 | Royse City 85%, Fate 13%, Nevada 2% | 1% | 8,112 | 15,743 | 0.52 | Split. Partial coverage. 11 new residential meters Oct 7-18, 2026. Mostly outside Rockwall city limits. |

## Business electricity in Rockwall
2,913 active business meters. Power Hopper compares offers from retail electric providers and direct suppliers; for high-consumption businesses we can run a competitive bid. No savings or bidder count is promised. Businesses in Texas retail-choice areas can request a rate review online.

## Questions
**Can Rockwall residents pick their own electric company?** Most Rockwall homes can. ERCOT's October 5, 2026 extract has 20,168 Rockwall-addressed homes on Oncor's competitive system, compared with 18,273 households in the Census survey. Split ZIP codes for Rockwall: 75189; on those, check the exact address.
**Which Rockwall ZIP code has the most homes on the competitive market?** 75087, with 16,724 competitive homes in ERCOT's data (11,371 addressed to Rockwall) against roughly 14,951 Census households, a 1.12 ratio.
**Are electric bills high in Rockwall?** Bills vary across Rockwall. 45.2% of households in 75032 told the Census survey (ACS 2020-2024) they pay $250 or more a month for electricity, compared with 38.2% in 75087. Bigger, older or all-electric homes push that share up, so compare plans at your own usage.
**I'm moving to Rockwall. How do I set up electricity?** 12.7% of 75032 residents moved within a year (ACS), and 13 75087 meters turned from vacant to active Oct. 7-18, 2026. Check that your Rockwall address is on Oncor's wires, then choose a plan and start date.
**Who do I call in Rockwall when the power goes out?** Call Oncor (oncor.com/outages), the wires utility for Rockwall's 20,168 competitive homes; a retail provider can't fix lines.

## Sources
- ERCOT TDSP ESIID Extract (report 203): full extract as of Oct 5, 2026; daily files Oct 7-18, 2026: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203
- Census ACS 2020-2024 5-year estimates (B25003 households, B01003 population): https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/
- Census Vintage 2025 city and town population estimates: https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/cities/totals/sub-est2025_48.csv
- Census 2020 ZCTA-to-place and ZCTA-to-county relationship files: https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/
- EIA-861 (2024) utility service territories by county: https://www.eia.gov/electricity/data/eia861/
- PUCT Power to Choose residential offer export, Oct 19, 2026, 7:59 AM CT: https://www.powertochoose.org/en-us/Plan/ExportToCsv
- PUCT: Choosing an Electric Plan: https://www.puc.texas.gov/consumer-help/electricity/electric-plan/
- PUCT broker directory (BR260201): https://www.puc.texas.gov/industry/electric/directories/brk/alpha_brk/
- Oncor Electric Delivery: https://www.oncor.com/
- Oncor delivery tariff (effective October 4, 2026): https://interchange.puc.texas.gov/Documents/59249_105_1676040.PDF
- Census Bureau Vintage 2025 city and town population estimates: https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/cities/totals/sub-est2025_48.csv
- ERCOT TDSP ESIID Extract (report 203), Oct 5, 2026: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203
- ERCOT daily TDSP ESIID Extract files, Oct 7-18, 2026, via Power Hopper's Oct 18 ZIP study: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203
- ERCOT TDSP ESIID Extract (report 203), Oct 5, 2026: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203
- ERCOT TDSP ESIID Extract (report 203), Oct 5, 2026: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203
- Census ACS 2020-2024 5-year, table B25003: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/
- ERCOT TDSP ESIID Extract (report 203), Oct 5, 2026: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203
- Census ACS 2020-2024 5-year, table B25003: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/
- Census 2020 ZCTA-to-place relationship file: https://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/
- ERCOT TDSP ESIID Extract (report 203), Oct 5, 2026: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203
- Census ACS 2020-2024 5-year, table B25003: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/

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