Living in Post Oak Bend, TX: what to set up and who to call
Oncor delivers the power in Post Oak Bend, but in Texas’s open market you choose the company that sells it. Children in Post Oak Bend attend Kaufman Independent School District.
I’m new in town
What to set up in Post Oak Bend, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Post Oak Bend.
Power comes from Oncor
Oncor (Oncor Electric Delivery Co.), an investor-owned utility, serves all of Post Oak Bend.
Start or move service: oncor.com · (888) 875-6279
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Rose Hill SUD
Rose Hill SUD supplies almost all of Post Oak Bend. It buys treated surface water (EPA lists North Texas Mwd Wylie WTP as seller) and serves 4,827 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 80% of the 5,012 systems serving 3,301–10,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 1.1 ppb, below the 15 ppb action level that applied. That’s higher than 53% of similar systems’ latest results.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. TX1290023.
9 home internet providers serve Post Oak Bend
99% of 287 addresses can get 100/20 Mbps; 99% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Open Infra | Fiber | 95% | 8,000/8,000 |
| Optimum | Cable, Fiber | 4% | 940/940 |
| Wi-Five Broadband | Fixed wireless | 92% | 100/100 |
| ANTS-Technology, ANTS-Wifi, ANTS-Fiber | Fixed wireless | 85% | 25/3 |
| Rise Broadband | Fixed wireless | 78% | 300/60 |
| T-Mobile | Fixed wireless | 54% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Post Oak Bend’s trash rules yet
Pickup rules, the dump and recycling in Post Oak Bend.
Where your child goes to school
Public school districts and the school path by grade.
Most of Post Oak Bend (98%) is in Kaufman Independent School District.
Test scores and every school: see Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Post Oak Bend is in ZIP code 75142
ZIP codes where Post Oak Bend residents live, with the share of the town in each.
| ZIP | Post office name | Share of Post Oak Bend | ZIP’s residents in Post Oak Bend |
|---|---|---|---|
| 75142 | Kaufman, TX | 100% | 3% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Post Oak Bend
Who supplies Post Oak Bend’s drinking water, and has it had violations?
Rose Hill SUD (EPA ID TX1290023). It reported no health-based violations to EPA in the five years to October 2026; 80% of systems its size had none. Its latest lead 90th percentile was 1.1 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Post Oak Bend?
Oncor (Oncor Electric Delivery Co.), an investor-owned utility.
What internet providers serve Post Oak Bend?
Open Infra, Optimum, Wi-Five Broadband, ANTS-Technology, ANTS-Wifi, ANTS-Fiber, Rise Broadband, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Post Oak Bend?
75142. Census 2020 ZIP Code Tabulation Areas.
What school district is Post Oak Bend in?
Kaufman Independent School District.
How do I register to vote in Post Oak Bend?
Texas has no online registration; you can register in person until 30 days before Election Day or by mail (postmarked 30 days before). Elections here are run by the Kaufman County Early Voting Clerk. Check your registration at teamrv-mvp.sos.texas.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Nov 18, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.