Lavon, Texas electricity: Oncor wires, 1 split ZIP code to check
Lavon sits on Oncor'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: ERCOT counts 3,677 active residential meters with a Lavon address, all on Oncor's wires (October 5, 2026). 1 of Lavon's ZIP codes is split, so most addresses can shop, but yours needs a check.
Who delivers electricity in Lavon?
Outages: Oncor at oncor.com/outages.
Oncor delivery charges and area
Can every address in Lavon choose an electricity provider?
Split ZIP codes holding Lavon homes: 75189. They carry 32 of the 3,677 competitive homes with a Lavon address (1%); on those streets a neighbor's utility can differ from yours.
Without retail choice unless opted in: 4 other utilities in Collin County (EIA 2024).
Moving to Lavon
Local numbers for setting up a home in Lavon, each checked on the official source. More contacts, and a printable list, are on Lavon helpful move-in information.
- Water and utility billing: utility billing (start, transfer or stop water service), 972-843-4220.
- Trash pickup: Community Waste Disposal (CWD): trash and recycling, 972-392-9300.
- Natural gas: Atmos Energy: customer service, 888-286-6700.
- Public schools: Community ISD.
- Driver license: Texas DPS Driver License Office: Rockwall, 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 Lavon 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 Lavon
Typical weather near Lavon, from the nearest NOAA station with a complete 1991-2020 record: Lavon Dam, about 3 miles from the city center (station elevation 510 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 93°F; January has the coolest average low, 34°F. Average daily highs reach 90°F or more in July 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 563 for the month, and heating-degree days (below 65°F) peak in January at 653. 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 | 54 | 34 | 2.6 | 1 | 653 |
| Feb | 58 | 38 | 2.7 | 3 | 474 |
| Mar | 65 | 46 | 3.5 | 19 | 306 |
| Apr | 73 | 53 | 3.7 | 63 | 117 |
| May | 80 | 63 | 4.7 | 217 | 19 |
| Jun | 88 | 70 | 4.1 | 429 | 0 |
| Jul | 92 | 73 | 1.9 | 552 | 0 |
| Aug | 93 | 73 | 2.2 | 563 | 0 |
| Sep | 87 | 66 | 3.1 | 345 | 6 |
| Oct | 77 | 55 | 4.4 | 111 | 87 |
| Nov | 65 | 45 | 3.4 | 15 | 325 |
| Dec | 56 | 36 | 3.5 | 2 | 589 |
Historical weather records for Collin County
The Texas Railroad Commission's county table lists a record low of -11°F (1899) and a record high of 115°F (1901), and a regional estimate of 30 consecutive hours as a typical longest freezing or frozen-precipitation period for Collin County. These are historical county extremes, not Lavon'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 Lavon, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00415094; Texas Railroad Commission, Historical Weather Data by County (2022).
What is different about electricity in Lavon?
- Population: 4,472 (2020 base) to 11,888 (July 2025), +165.8%, per Census Vintage 2025 estimates. The largest one-year change was +3,420 people, from July 2024 to July 2025. July 1 estimates in between: 5,335 (2021), 6,522 (2022), 7,550 (2023), 8,468 (2024). (Census)
- Lavon covers 4.3 square miles of land (Census 2025 Gazetteer). That works out to about 2,770 residents and 484 occupied households per square mile of land, with roughly 5.7 residents for every Lavon household. (Census, Census, Census)
- Mailing addresses stretch past city limits here. 3,677 competitive residential meters use Lavon as their postal city, while the city itself has 2,077 Census households, a ratio of 1.77. Because Lavon has grown 166 percent since the 2020 base, the ACS 2020-2024 household figure likely runs behind today's count. (ERCOT, Census)
- Of the 3,564,530 homes Oncor serves on the competitive market, 0.1% have a Lavon mailing address. (ERCOT)
- Meter additions, Oct. 7-18, 2026 (ERCOT daily files): 10 across Lavon's core ZIP codes, led by 75166 at 10; vacant-to-active switches over those days: 34. (ERCOT)
- On October 5, 2026, ERCOT showed 360 home meters switched off (de-energized) in the ZIP codes most Lavon homes use, against 3,645 switched on; that 9.0 percent is mostly vacant houses and apartments between occupants. (ERCOT)
- One ZIP code, 75166, holds almost every Lavon-addressed competitive home (3,645). Taken whole, 75166 has 1.62 competitive meters per Census household: 3,645 meters, 2,253 households. (ERCOT, Census)
- Among the 30 cities and towns that reach into Collin County, Lavon places 16 for competitive homes on its postal city; the next one up is Melissa, at 3,808. (ERCOT)
- By the Census Bureau's 2025 estimates, Lavon is the number 18 city or town by population among the 32 that reach into Collin County, one place ahead of Fairview (10,913 residents). (Census)
- Electric bills over $250 a month: 27.8 percent of households in 75166, Lavon's main ZIP code, per the ACS 2020-2024; the same survey puts median household income there at $132,101 and the renter share at 9.1 percent. (Census)
- Neighbors differ: Rockwall, about 7 miles away, has 20,168 competitive homes on its postal city, while Josephine manages 0.57 per household. (ERCOT, Census)
Lavon electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 11,888 |
| Population (2020 estimates base) | 4,472 |
| Occupied households (ACS 2020-2024) | 2,077 |
| Active residential meters with a Lavon address | 3,677 |
| Active business meters with a Lavon address | 289 |
| Residential meters per Census household | 1.77 |
| Delivery utilities (homes) | Oncor 3,677 |
| Counties | Collin |
| ZIP codes touching Lavon | 2 |
| Split ZIP codes (flagged below) | 1 |
How we built these numbers. Download: Lavon ZIP table (CSV).
What do electricity plans cost in Lavon 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) |
Lavon 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 Lavon address | Share of ZIP land in Lavon | Mailing cities | Reading |
|---|---|---|---|---|---|---|---|
| 75189 | 0.52 | 8,112 | 15,743 | 32 | 0% | Royse City 85%, Fate 13%, Nevada 2% | Split. Partial coverage. 11 new residential meters Oct 7-18, 2026. Mostly outside Lavon city limits. |
| 75166 | 1.62 | 3,645 | 2,253 | 3,645 | 24% | Lavon 100% | Near-full coverage. 10 new residential meters Oct 7-18, 2026. |
Split ZIP codes for Lavon: 75189.
Homes, renters and electric bills in Lavon’s ZIP codes
ZIP 75166 leads Lavon on electric bills over $250 a month, reported by 27.8 percent of its households; 75166 the most homes built since 2020, 24.4 percent (Census ACS 2020-2024).
| ZIP | Bills $250+ | Household income (median) | Built since 2020 | Lavon-addressed homes | Renting | Meters added Oct 7-18 | In 5+ unit buildings | Vacant-to-active switches |
|---|---|---|---|---|---|---|---|---|
| 75166 | 27.8% | $132,101 | 24.4% | 3,645 | 9.1% | 10 | 0.0% | 34 |
ACS 2020-2024 by ZCTA; meters: ERCOT daily files, Oct 7-18, 2026.
Lavon and its neighbors
| Nearby town (2,000+ residents) | Wires utility | Can homes choose? | Postal-city meters per household | Distance | Competitive homes, postal city |
|---|---|---|---|---|---|
| Wylie | Oncor | Yes, mostly | 0.75 | 6 mi away | 14,016 homes |
| Fate | Oncor | Yes, mostly | 0.94 | 6 mi away | 6,337 homes |
| Josephine | Oncor | Some areas | 0.57 | 7 mi away | 1,049 homes |
| Rockwall | Oncor | Yes, mostly | 1.10 | 7 mi away | 20,168 homes |
| Royse City | Oncor | Yes, mostly | 1.05 | 8 mi away | 6,912 homes |
| Sachse | Oncor | Yes, mostly | 0.79 | 9 mi away | 8,335 homes |
Business electricity in Lavon
Lavon business meters: 289 (12.7 homes per business meter); large non-residential meters in Lavon’s main ZIP codes: 0 (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 Lavon?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in Lavon
Can I choose my electricity provider in Lavon?
Most Lavon homes can. ERCOT's October 5, 2026 extract has 3,677 Lavon-addressed homes on Oncor's competitive system, compared with 2,077 households in the Census survey. Addresses in 75189 (split) need an exact-address check before you shop.
What is the biggest Lavon ZIP code for electricity customers?
75166. It holds 3,645 Lavon-addressed competitive homes; counting every address in the ZIP, ERCOT has 3,645 meters for roughly 2,253 households, a 1.62 ratio.
How much is electricity in Lavon 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.
How do I start electric service at a new Lavon address?
Start with the address check: Oncor-delivered Lavon homes choose among the plans offered there and set a start date. Turnover is real in 75166, where 14.9% moved in the past year (ACS); ERCOT logged 34 vacant-to-active meters in 75166 Oct. 7-18, 2026.
Why are there more electric meters than households in Lavon?
3,677 Lavon-addressed meters against 2,077 city households is 1.77 per household: the Lavon 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 Lavon after an outage?
Call Oncor (oncor.com/outages), the wires utility for Lavon's 3,677 competitive homes; a retail provider can't fix lines.
Where to next?
Up: Oncor area · Collin County
Nearest town pages: Wylie · Fate · Josephine · Rockwall · Royse City · Sachse · Rowlett · Murphy
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)
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