Elgin, Texas electricity: Oncor wires, 1 split ZIP code to check
7,865 Elgin-addressed homes buy power on Oncor's system, about 1.8 for each Census household. Here is where choice stops, what delivery costs and where plan prices sit today.
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 7,865 active residential meters with an Elgin address, all on Oncor's wires (October 5, 2026). 1 of Elgin's ZIP codes is split, so most addresses can shop, but yours needs a check.
Who delivers electricity in Elgin?
Outages: Oncor at oncor.com/outages.
Oncor delivery charges and area
Can every address in Elgin choose an electricity provider?
Split ZIP codes holding Elgin homes: 78621. They carry 7,798 of the 7,833 competitive homes with an Elgin address (100%); on those streets a neighbor's utility can differ from yours.
Without retail choice unless opted in: 3 other utilities in Bastrop County · Travis County (EIA 2024).
Moving to Elgin
Local numbers for setting up a home in Elgin, each checked on the official source. More contacts, and a printable list, are on Elgin helpful move-in information.
- Water and utility billing: utility billing (start, transfer or stop water service), 512-229-3220.
- Natural gas: CenterPoint Energy: gas leak emergency (24/7), 888-876-5786.
- Public schools: Elgin ISD.
- Driver license: Texas DPS Driver License Office: Taylor, 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 Elgin 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 Elgin
Typical weather near Elgin, from the nearest NOAA station with a complete 1991-2020 record: Elgin 1 N, about 1 mile from the city center (station elevation 594 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 96°F; January has the coolest average low, 39°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 608 for the month, and heating-degree days (below 65°F) peak in January at 472. 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 | 61 | 39 | 3.0 | 7 | 472 |
| Feb | 64 | 43 | 2.1 | 14 | 336 |
| Mar | 71 | 49 | 3.2 | 47 | 191 |
| Apr | 79 | 57 | 2.7 | 134 | 56 |
| May | 85 | 65 | 4.9 | 316 | 6 |
| Jun | 92 | 71 | 3.0 | 495 | 0 |
| Jul | 95 | 73 | 2.0 | 594 | 0 |
| Aug | 96 | 73 | 2.3 | 608 | 0 |
| Sep | 90 | 68 | 3.0 | 420 | 2 |
| Oct | 81 | 58 | 4.0 | 196 | 46 |
| Nov | 70 | 49 | 3.1 | 49 | 217 |
| Dec | 62 | 41 | 3.0 | 11 | 425 |
Historical weather records for Bastrop and Travis counties
Elgin lies in Bastrop and Travis counties. The Texas Railroad Commission's county table lists, for each county:
- Bastrop County: a record low of -3°F (1989) and a record high of 111°F (2011), and a regional estimate of 18 consecutive hours as a typical longest freezing or frozen-precipitation period.
- Travis County: a record low of -5°F (1949) and a record high of 112°F (2011), and a regional estimate of 24 consecutive hours as a typical longest freezing or frozen-precipitation period.
These are historical county extremes, not Elgin'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 Elgin, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00412820; Texas Railroad Commission, Historical Weather Data by County (2022).
What is different about electricity in Elgin?
- Population: 9,700 (2020 base) to 13,327 (July 2025), +37.4%, per Census Vintage 2025 estimates. The largest one-year change was +987 people, from July 2022 to July 2023. July 1 estimates in between: 10,457 (2021), 11,368 (2022), 12,355 (2023), 12,542 (2024). (Census)
- Elgin covers 7.3 square miles of land (Census 2025 Gazetteer). That works out to about 1,837 residents and 603 occupied households per square mile of land, with roughly 3.0 residents for every Elgin household. (Census, Census, Census)
- Mailing addresses stretch past city limits here. 7,865 competitive residential meters use Elgin as their postal city, while the city itself has 4,375 Census households, a ratio of 1.8. Because Elgin has grown 37 percent since the 2020 base, the ACS 2020-2024 household figure likely runs behind today's count. (ERCOT, Census)
- Oncor share: 0.2% of its 3,564,530 competitive residential meters carry an Elgin address. (ERCOT)
- ERCOT's daily extracts logged 15 newly created home meters in the ZIP codes most Elgin homes use between Oct. 7 and Oct. 18, 2026; the busiest was 78621 with 15. Another 160 went from vacant to active over the same days. (ERCOT)
- On October 5, 2026, ERCOT showed 1,406 home meters switched off (de-energized) in the ZIP codes most Elgin homes use, against 7,806 switched on; that 15.3 percent is mostly vacant houses and apartments between occupants. (ERCOT)
- One ZIP code, 78621, holds almost every Elgin-addressed competitive home (7,798). Taken whole, 78621 has 0.77 competitive meters per Census household: 7,806 meters, 10,175 households. (ERCOT, Census)
- By the Census Bureau's 2025 estimates, Elgin is the number 3 city or town by population among the 5 that reach into Bastrop County, one place ahead of Smithville (4,367 residents). (Census)
- Electric bills over $250 a month: 34.8 percent of households in 78621, Elgin's main ZIP code, per the ACS 2020-2024; the same survey puts median household income there at $98,534 and the renter share at 18.9 percent. (Census)
- Neighbors differ: Round Rock, about 20 miles away, has 72,407 competitive homes on its postal city, while Manor manages 0.23 per household. (ERCOT, Census)
Elgin electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 13,327 |
| Population (2020 estimates base) | 9,700 |
| Occupied households (ACS 2020-2024) | 4,375 |
| Active residential meters with an Elgin address | 7,865 |
| Active business meters with an Elgin address | 1,235 |
| Residential meters per Census household | 1.8 |
| Delivery utilities (homes) | Oncor 7,865 |
| Counties | Bastrop, Travis |
| ZIP codes touching Elgin | 2 |
| Split ZIP codes (flagged below) | 1 |
How we built these numbers. Download: Elgin ZIP table (CSV).
What do electricity plans cost in Elgin right now?
Same-day medians for Oncor’s area (Oncor: 170 listings), delivery included; not a quote.
| Delivery utility | 500 kWh | 1,000 kWh | 2,000 kWh | Delivery charge |
|---|---|---|---|---|
| Oncor | 14.1¢ | 13.4¢ | 13.2¢ | 6.8673¢/kWh + $4.06/mo (effective October 4, 2026; tariff) |
Elgin 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 | Meters per household | ERCOT competitive homes | Census households | With Elgin address | Share of ZIP land in Elgin | Mailing cities | Reading |
|---|---|---|---|---|---|---|---|
| 78621 | 0.77 | 7,806 | 10,175 | 7,798 | 4% | Elgin 100% | Split. Most homes, not all. 15 new residential meters Oct 7-18, 2026. Mostly outside Elgin city limits. |
| 78615 | 1.04 | 573 | 549 | 35 | 0% | Coupland 69%, Taylor 24%, Elgin 6% | Near-full coverage. Mostly outside Elgin city limits. |
Split ZIP codes for Elgin: 78621.
Homes, renters and electric bills in Elgin’s ZIP codes
ZIP 78621 leads Elgin on electric bills over $250 a month, reported by 34.8 percent of its households; 78621 the most homes built since 2020, 6.9 percent (Census ACS 2020-2024).
| ZIP | Bills $250+ | Household income (median) | Built since 2020 | Elgin-addressed homes | Renting | Meters added Oct 7-18 | In 5+ unit buildings | Vacant-to-active switches |
|---|---|---|---|---|---|---|---|---|
| 78621 | 34.8% | $98,534 | 6.9% | 7,798 | 18.9% | 15 | 1.4% | 160 |
ACS 2020-2024 by ZCTA; meters: ERCOT daily files, Oct 7-18, 2026.
Elgin and its neighbors
| Nearby town (2,000+ residents) | Wires utility | Can homes choose? | Postal-city meters per household | Distance | Competitive homes, postal city |
|---|---|---|---|---|---|
| Manor | Oncor | Some areas | 0.23 | 10 mi away | 1,436 homes |
| Pflugerville | Oncor | Yes, mostly | 1.71 | 14 mi away | 41,772 homes |
| Taylor | Oncor | Yes, mostly | 1.42 | 15 mi away | 9,352 homes |
| Hutto | Oncor | Yes, mostly | 1.98 | 16 mi away | 23,298 homes |
| Bastrop | — | No (city-owned utility) | n/a | 17 mi away | 0 homes |
| Round Rock | Oncor | Yes, mostly | 1.49 | 20 mi away | 72,407 homes |
Business electricity in Elgin
Elgin business meters: 1,235 (6.4 homes per business meter); large non-residential meters in Elgin’s main ZIP codes: 3 (ERCOT, October 5, 2026).
Larger accounts can go out to bid with retail providers and direct suppliers; we can’t promise savings or bids.
How do I compare electricity plans in Elgin?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in Elgin
Can Elgin residents pick their own electric company?
Yes, where Oncor's wires reach the house, which in Elgin is most of the city: 7,865 homes with an Elgin mailing address were on the competitive market on October 5, 2026, 1.8 for each Census household. Addresses in 78621 (split) need an exact-address check before you shop.
What is the biggest Elgin ZIP code for electricity customers?
78621. It holds 7,798 Elgin-addressed competitive homes; counting every address in the ZIP, ERCOT has 7,806 meters for roughly 10,175 households, a 0.77 ratio.
What is the average electricity rate in Elgin?
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.
How do I start electric service at a new Elgin address?
9.4% of 78621 residents moved within a year (ACS), and 160 meters in 78621 turned from vacant to active Oct. 7-18, 2026. Check that your Elgin address is on Oncor's wires, then choose a plan and start date.
Why are there more electric meters than households in Elgin?
7,865 Elgin-addressed meters against 4,375 city households is 1.8 per household: the Elgin 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 do I call in Elgin when the power goes out?
Oncor, at oncor.com/outages: it carries power to all 7,865 Elgin-addressed competitive homes, whatever retail provider bills them.
Where to next?
Up: Oncor area · Bastrop County · Travis County
Nearest town pages: Manor · Pflugerville · Taylor · Hutto · Round Rock · Rockdale · Jarrell · Belton
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)
- Oncor Electric Delivery
- Oncor delivery tariff (effective October 4, 2026)
- Census Bureau 2025 Gazetteer Files, Texas places (land and water area)
BJW Ventures LLC d/b/a Power Hopper | PUCT BR260201. PUCT registration is not an endorsement.