Princeton, Texas electricity: Oncor wires, 1 split ZIP code to check
Princeton's 23,334 competitive homes sit on Oncor's wires; here is where choice stops, what delivery costs and how plan prices look 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: Princeton homes in ERCOT's competitive data are on Oncor's wires (13,244) and TNMP's wires (10,090). Most Princeton addresses can choose a retail provider, but 1 of the ZIP codes below is split, so check your exact address.
Who delivers electricity in Princeton?
Outages: Oncor at oncor.com/outages.
Oncor delivery charges and area · TNMP delivery charges and area
Can every address in Princeton choose an electricity provider?
Of the 23,319 Princeton-addressed competitive homes we can place by ZIP code, 23,319 (100%) are in the split ZIP codes 75407; on those streets, a neighbor may be on a different utility. The ZIP table below marks each one.
EIA’s 2024 data lists 4 other utilities (co-ops, city-owned or outside ERCOT) in the county around Princeton; they are named on Collin County. Their customers can’t choose unless the utility opted in.
Moving to Princeton
Local numbers for setting up a home in Princeton, each checked on the official source. More contacts, and a printable list, are on Princeton helpful move-in information.
- Water and utility billing: utility billing (start, transfer or stop water service), 972-736-2711.
- Natural gas: Atmos Energy: customer service, 888-286-6700.
- Public schools: Princeton ISD, McKinney ISD.
- Driver license: Texas DPS Driver License Office: McKinney, 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 Princeton 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 Princeton
Typical weather near Princeton, from the nearest NOAA station with a complete 1991-2020 record: Mckinney Municipal Airport, about 4 miles from the city center (station elevation 580 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, 34°F. Average daily highs reach 90°F or more in June 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 July at 601 for the month, and heating-degree days (below 65°F) peak in January at 631. 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 | 56 | 34 | 2.7 | 2 | 631 |
| Feb | 60 | 38 | 2.6 | 6 | 457 |
| Mar | 68 | 46 | 3.5 | 25 | 289 |
| Apr | 75 | 53 | 3.6 | 77 | 112 |
| May | 83 | 62 | 4.8 | 251 | 15 |
| Jun | 91 | 70 | 3.6 | 463 | 0 |
| Jul | 95 | 74 | 2.0 | 601 | 0 |
| Aug | 96 | 73 | 1.7 | 598 | 0 |
| Sep | 88 | 66 | 2.8 | 362 | 5 |
| Oct | 78 | 54 | 4.4 | 123 | 90 |
| Nov | 66 | 44 | 3.2 | 20 | 321 |
| Dec | 57 | 36 | 3.5 | 4 | 579 |
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 Princeton'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 Princeton, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USW00053914; Texas Railroad Commission, Historical Weather Data by County (2022).
What is different about electricity in Princeton?
- EIA's 2024 data lists CoServ Electric (Denton County Electric Cooperative, 298,734 residential customers) in Collin and Denton counties, along with other co-ops; co-op members are not on the competitive market. Source: EIA-861 (2024); CoServ: About.
- Census estimates put Princeton at 43,524 residents on July 1, 2025, up 156.1% from a 2020 estimates base of 16,996. Source: Census Bureau.
- ERCOT lists 23,334 competitive residential meters with a Princeton mailing address, about 2.96 per Census household in the city (7,873), because the Princeton postal area reaches beyond city limits. Source: ERCOT TDSP; Census ACS.
- ERCOT's daily files added 41 new residential meters in Princeton's main ZIP codes between Oct. 7 and Oct. 18, 2026, 41 of them in 75407. Source: ERCOT daily.
- Princeton-addressed business meters number 1,922 in ERCOT's Oct. 5 extract, one for every 12.1 homes. Source: ERCOT TDSP.
Princeton electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 43,524 |
| Population (2020 estimates base) | 16,996 |
| Occupied households (ACS 2020-2024) | 7,873 |
| Active residential meters with a Princeton address | 23,334 |
| Active business meters with a Princeton address | 1,922 |
| Residential meters per Census household | 2.96 |
| Delivery utilities (homes) | Oncor 13,244; TNMP 10,090 |
| Counties | Collin |
| ZIP codes touching Princeton | 1 |
| Split ZIP codes (flagged below) | 1 |
How we built these numbers. Download: Princeton ZIP table (CSV).
What do electricity plans cost in Princeton right now?
Same-day medians for Oncor’s area (Oncor: 170; TNMP: 166 listings), delivery included; not a quote.
Princeton 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 | Main postal cities (homes) | ZIP land inside Princeton | Competitive homes (ERCOT) | Households (Census) | Ratio | What it means |
|---|---|---|---|---|---|---|
| 75407 | Princeton 99% | 20% | 23,486 | 11,059 | 2.12 | Split. Near-full coverage. Two delivery utilities: Oncor 13,396, TNMP 10,090 homes. 41 new residential meters Oct 7-18, 2026. |
Split ZIP codes for Princeton: 75407.
Homes, renters and electric bills in Princeton’s ZIP codes
Among Princeton’s main ZIP codes, 75407 has the largest share of households paying $250 or more a month for electricity (29.3%); 75407 has the newest housing (25.5% built in 2020 or later).
| ZIP | Renter households | Moved in the past year | Electric bill $250+/month | Built 2020 or later | New meters Oct 7-18, 2026 |
|---|---|---|---|---|---|
| 75407 | 23.8% | 12.0% | 29.3% | 25.5% | 41 |
How do towns near Princeton compare?
Within about 28 miles; whole-place estimates.
| Town | Population | Distance | Delivery utility | Status | Competitive homes (postal city) |
|---|---|---|---|---|---|
| Lowry Crossing | 2,521 | 2 mi | Oncor | Most addresses can choose | 1,256 |
| Fairview | 10,913 | 7 mi | Oncor | Partly | 2,473 |
| Lucas | 8,896 | 7 mi | — | Few or none can choose | 534 |
| Melissa | 29,969 | 8 mi | Oncor | Partly | 3,808 |
| Farmersville | 5,531 | 9 mi | TNMP | Partly; city utility serves the rest | 4,431 |
| McKinney | 236,001 | 9 mi | Oncor | Partly | 41,092 |
Business electricity in Princeton
ERCOT lists 1,922 active business meters with a Princeton address, about one for every 12.1 homes, and 1 meters in ERCOT’s large non-residential class across Princeton’s main ZIP codes.
Power Hopper compares offers from retail electric providers and direct suppliers for businesses. For high-consumption businesses, we can run a competitive bid so more than one supplier prices the same usage. We can’t promise savings or how many suppliers will bid. Businesses in Texas retail-choice areas can request a rate review online.
How do I compare electricity plans in Princeton?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in Princeton
Can Princeton residents pick their own electric company?
Yes, if Oncor delivers to your address. ERCOT lists 23,334 Princeton-addressed homes on the competitive market (October 5, 2026), about 2.96 per Census household. 1 of the ZIP codes touching Princeton is split (75407), so check your exact address.
What is the biggest Princeton ZIP code for electricity customers?
75407. ERCOT lists 23,486 competitive residential meters there, 23,319 with a Princeton address, against about 11,059 Census households in the ZIP (ratio 2.12).
How many businesses in Princeton are on the competitive electricity market?
Yes, on Oncor's wires. ERCOT lists 1,922 active business meters with a Princeton address, one for every 12.1 homes. Larger accounts can also buy from suppliers that sell directly to commercial customers; Power Hopper can run a competitive bid for high-consumption businesses, though we can't promise savings or how many suppliers will bid.
Why are there more electric meters than households in Princeton?
ERCOT counts 23,334 competitive residential meters with a Princeton mailing address, about 2.96 for every Census household in the city (7,873). The Princeton postal area is bigger than the city, and new homes get a meter before the Census survey counts them. It does not mean every Princeton-area address can choose; check yours.
Who do I call in Princeton when the power goes out?
Your delivery utility, which in Princeton depends on the street: ERCOT shows Princeton homes on Oncor (13,244) and TNMP (10,090). Your retail provider cannot restore power.
Where to next?
Up: Oncor area · TNMP area · Collin County
Nearest town pages: McKinney · Allen · Plano · Frisco · Richardson · Rowlett · Garland · Lewisville
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
- Texas-New Mexico Power (TNMP)
- Oncor delivery tariff (effective October 4, 2026)
- TNMP delivery tariff (effective September 13, 2026)
- CoServ: About (history: Denton County Electric Cooperative, founded 1937; 400,000+ combined electric and gas meters by Dec. 2020)
BJW Ventures LLC d/b/a Power Hopper | PUCT BR260201. PUCT registration is not an endorsement.