# Jarrell, Texas electricity: Oncor wires, 2 split ZIP codes 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 5,436 active residential meters with a Jarrell address, all on Oncor's wires (October 5, 2026). 2 of Jarrell's ZIP codes are split, so most addresses can shop, but yours needs a check.

## Moving to Jarrell

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

- **City hall (ask about water service):** City of Jarrell: City Hall (main line), 512-746-4593.
- **Natural gas:** Atmos Energy: customer service, 888-286-6700.
- **Public schools:** Jarrell ISD.
- **Driver license:** Texas DPS Driver License Office: Georgetown, 512-424-2600.

## Who delivers electricity in Jarrell?
ERCOT counts 5,436 active residential meters with a Jarrell address, all on Oncor's wires (October 5, 2026).

## Can every address in Jarrell choose?
Split ZIP codes holding Jarrell homes: 78633, 78626. They carry 0 of the 5,435 competitive homes with a Jarrell address (0%); on those streets a neighbor's utility can differ from yours.

## What is different about Jarrell?
- ERCOT's data has no postal city for Sonterra (a census-designated place of about 10,563 residents, ACS 2020-2024), mostly in ZIP 76537. Those homes use Jarrell mailing addresses, so residents there can use this page's ZIP table; there is no separate page for Sonterra. (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://www2.census.gov/geo/docs/maps-data/data/rel2020/zcta520/)
- The Census Bureau's July 1, 2025 estimate for Jarrell is 5,870 people, up 238.9% on the 2020 estimates base of 1,732. The largest one-year change was +1,288 people, from July 2021 to July 2022. July 1 estimates in between: 2,099 (2021), 3,387 (2022), 3,987 (2023), 5,145 (2024). (Source: https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/cities/totals/sub-est2025_48.csv)
- Jarrell covers 3.7 square miles of land (Census 2025 Gazetteer). That works out to about 1,605 residents and 307 occupied households per square mile of land, with roughly 5.2 residents for every Jarrell household. (Source: https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html, https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/cities/totals/sub-est2025_48.csv, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/)
- Mailing addresses stretch past city limits here. 5,436 competitive residential meters use Jarrell as their postal city, while the city itself has 1,124 Census households, a ratio of 4.84. Because Jarrell has grown 239 percent since the 2020 base, the ACS 2020-2024 household figure likely runs behind today's count. (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/)
- Of the 3,564,530 homes Oncor serves on the competitive market, 0.2% have a Jarrell mailing address. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- Move-ins show up as vacant-to-active switches in ERCOT's daily files: 22 of them in the ZIP codes most Jarrell homes use, Oct. 7-18, 2026. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- On October 5, 2026, ERCOT showed 678 home meters switched off (de-energized) in the ZIP codes most Jarrell homes use, against 5,530 switched on; that 10.9 percent is mostly vacant houses and apartments between occupants. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- One ZIP code, 76537, holds almost every Jarrell-addressed competitive home (5,435); it also carries 92 Taylor addresses. Taken whole, 76537 has 1.02 competitive meters per Census household: 5,530 meters, 5,448 households. (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/)
- Among the 14 cities and towns that reach into Williamson County, Jarrell places 7 for competitive homes on its postal city; the next one up is Taylor, at 9,352. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- By the Census Bureau's 2025 estimates, Jarrell is the number 10 city or town by population among the 17 that reach into Williamson County, one place ahead of Bartlett (1,678 residents). (Source: https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/cities/totals/sub-est2025_48.csv)
- Mailing cities on the 5,530 competitive home meters in 76537, Jarrell's main ZIP code: Jarrell 5,435, Taylor 92. A mailing city is not a city limit, so the service address, not the postal name, settles which utility serves a home. (Source: https://www.ercot.com/misapp/GetReports.do?reportTypeId=203)
- Electric bills over $250 a month: 25.2 percent of households in 76537, Jarrell's main ZIP code, per the ACS 2020-2024; the same survey puts median household income there at $98,199 and the renter share at 20.5 percent. (Source: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/)

## By the numbers
- Population (July 1, 2025 estimate): 5,870
- Population (2020 estimates base): 1,732
- Occupied households (ACS 2020-2024): 1,124
- Active residential meters with a Jarrell address: 5,436
- Active business meters with a Jarrell address: 389
- Residential meters per Census household: 4.84
- Delivery utilities (homes): Oncor 5,436
- Counties: Williamson
- ZIP codes touching Jarrell: 3
- Split ZIP codes (flagged below): 2

## 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 |
|---|---|---|---|---|---|---|
| 78626 | Georgetown 99%, Round Rock 1% | 0% | 11,605 | 16,813 | 0.69 | Split. Most homes, not all. Split: City of Georgetown (Georgetown city limits cover about 23% of the ZIP's land); that utility's customers can't choose. 16 new residential meters Oct 7-18, 2026. Mostly outside Jarrell city limits. |
| 76537 | Jarrell 98%, Taylor 2% | 5% | 5,530 | 5,448 | 1.02 | Near-full coverage. Mostly outside Jarrell city limits. |
| 78633 | Georgetown 66%, Copperas Cove 33%, Round Rock 1% | 0% | 67 | 14,245 | 0.0 | Split. Little coverage. Split: City of Georgetown (Georgetown city limits cover about 22% of the ZIP's land); that utility's customers can't choose. Mostly outside Jarrell city limits. |

## Business electricity in Jarrell
389 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
**I live in Sonterra. Which electricity page covers me?** Use this Jarrell page. Sonterra has no postal city of its own in ERCOT's data; its homes carry Jarrell addresses. In ZIP 76537, ERCOT lists 5,530 competitive residential meters against about 5,448 Census households (ratio 1.02). Check your exact address.
**Is Jarrell deregulated for electricity?** Yes, where Oncor's wires reach the house, which in Jarrell is most of the city: 5,436 homes with a Jarrell mailing address were on the competitive market on October 5, 2026, 4.84 for each Census household. Addresses in 78633, 78626 (all split) need an exact-address check before you shop.
**Which Jarrell ZIP code has the most homes on the competitive market?** That is 76537, home to 5,435 of the competitive meters with a Jarrell address. ZIP-wide: 5,530 ERCOT meters, about 5,448 Census households, 1.02 per household.
**How much is electricity in Jarrell right now?** On October 19, 2026, the median fixed-rate Power to Choose listing on Oncor's wires was 13.4¢ per kWh at 1,000 kWh a month (170 listings); Oncor's delivery charge of 6.8673¢ per kWh plus $4.06 a month is included. A median is not a quote.
**I'm moving to Jarrell. How do I set up electricity?** Confirm the address is on Oncor's wires, then pick a plan and a start date. In 76537, 15.0% of residents moved in the past year (ACS); 22 meters in 76537 went vacant-to-active Oct. 7-18, 2026.
**Why are there more electric meters than households in Jarrell?** 5,436 Jarrell-addressed meters against 1,124 city households is 4.84 per household: the Jarrell 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.

## 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
- 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/
- 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
- Census Bureau 2025 Gazetteer Files, Texas places (land and water area): https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html
- 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
- 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/
- 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 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/

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