# Corsicana, 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 11,206 active residential meters with a Corsicana address, all on Oncor's wires (October 5, 2026). 1 of Corsicana's ZIP codes is split, so most addresses can shop, but yours needs a check.

## Moving to Corsicana

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

- **Water and utility billing:** utility billing (start, transfer or stop water service), 903-654-4825.
- **Natural gas:** Atmos Energy: customer service, 888-286-6700.
- **Public schools:** Corsicana ISD, Mildred ISD.
- **Driver license:** Texas DPS Driver License Office: Corsicana, 512-424-2600.

## Who delivers electricity in Corsicana?
ERCOT counts 11,206 active residential meters with a Corsicana address, all on Oncor's wires (October 5, 2026).

## Can every address in Corsicana choose?
777 of 11,197 Corsicana-addressed competitive homes (7%) are in split ZIP codes (75109), where a neighbor may have a different utility.

## What is different about Corsicana?
- The Census Bureau's July 1, 2025 estimate for Corsicana is 25,487 people, up 1.5% on the 2020 estimates base of 25,114. The largest one-year change was +399 people, from July 2020 to July 2021. (Source: https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/cities/totals/sub-est2025_48.csv)
- Mailing addresses stretch past city limits here. 11,206 competitive residential meters use Corsicana as their postal city, while the city itself has 8,587 Census households, a ratio of 1.3. (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/)
- Oncor share: 0.3% of its 3,564,530 competitive residential meters carry a Corsicana address. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- From Oct. 7 to Oct. 18, 2026, 23 residential meters in Corsicana'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)
- Corsicana's main ZIP codes: 12,458 active and 1,341 de-energized residential meters (9.7% de-energized, usually empty or between tenants). (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- Corsicana's biggest ZIP code for electricity customers is 75110, with 10,420 of the 11,197 competitive homes that carry a Corsicana address and a ZIP-wide ratio of 1.06 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/)
- Navarro County context: Corsicana ranks 1 of 18 touching cities and towns for postal-city competitive homes, ahead of Rice (902). (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- In ZIP 75109, which holds 777 Corsicana-addressed homes, ERCOT counts only 0.62 competitive meters per Census household. EIA's 2024 data lists Navarro County Electric Cooperative in the counties ERCOT and the Census link to that ZIP; their customers are not on the competitive market unless the utility opted in. (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/, https://www.eia.gov/electricity/data/eia861/)
- 39.1% of households in 75110 rent (ACS 2020-2024), the most among Corsicana's main ZIP codes, so a lot of Corsicana electricity accounts open and close with each lease. (Source: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/)
- Median household income across Corsicana's main ZIP codes runs from $57,370 in 75110 to $88,074 in 75109 (ACS 2020-2024); 40.4% of 75109 households and 28.7% of 75110 households report $250+ monthly electric bills. (Source: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/)

## By the numbers
- Population (July 1, 2025 estimate): 25,487
- Population (2020 estimates base): 25,114
- Occupied households (ACS 2020-2024): 8,587
- Active residential meters with a Corsicana address: 11,206
- Active business meters with a Corsicana address: 3,233
- Residential meters per Census household: 1.3
- Delivery utilities (homes): Oncor 11,206
- Counties: Navarro
- ZIP codes touching Corsicana: 2
- 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 |
|---|---|---|---|---|---|---|
| 75110 | Corsicana 93%, Retreat 2%, Oak Valley 1% | 13% | 11,172 | 10,586 | 1.06 | Near-full coverage.  |
| 75109 | Corsicana 60%, Mildred 18%, Eureka 9% | 5% | 1,286 | 2,074 | 0.62 | Split. Most homes, not all. Mostly outside Corsicana city limits. |

## Business electricity in Corsicana
3,233 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 I choose my electricity provider in Corsicana?** Most Corsicana homes can. ERCOT's October 5, 2026 extract has 11,206 Corsicana-addressed homes on Oncor's competitive system, compared with 8,587 households in the Census survey. Split ZIP codes for Corsicana: 75109; on those, check the exact address.
**Which Corsicana ZIP code has the most homes on the competitive market?** 75110, with 11,172 competitive homes in ERCOT's data (10,420 addressed to Corsicana) against roughly 10,586 Census households, a 1.06 ratio. Coverage is thinnest in 75109, at 0.62.
**Are electric bills high in Corsicana?** In 75109, 40.4% of households reported electricity bills of $250 or more a month in the ACS 2020-2024 survey, the highest among Corsicana's main ZIP codes; in 75110 it was 28.7%. House size and heating type explain much of the difference.
**I'm moving to Corsicana. How do I set up electricity?** 16.4% of 75110 residents moved within a year (ACS), and 21 75110 meters turned from vacant to active Oct. 7-18, 2026. Check that your Corsicana address is on Oncor's wires, then choose a plan and start date.
**Why are there more electric meters than households in Corsicana?** 11,206 Corsicana-addressed meters against 8,587 city households is 1.3 per household: the Corsicana 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 Corsicana power outage?** Oncor, at oncor.com/outages: it carries power to all 11,206 Corsicana-addressed competitive homes, whatever retail provider bills them.

## 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
- 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
- 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
- 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/
- EIA-861 (2024) utility service territories by county: https://www.eia.gov/electricity/data/eia861/
- Census ACS 2020-2024 5-year, table B25003: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/
- 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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