Photo: Renelibrary · CC BY-SA 3.0Living in Denison, TX: what to set up and who to call
Oncor delivers the power in Denison, but in Texas’s open market you choose the company that sells it. Denison Public Library, 2.5 miles away, is the closest library to Denison.
I’m new in town
What to set up in Denison, 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 Denison.
Power comes from Oncor
Oncor (Oncor Electric Delivery Co.), an investor-owned utility, serves all of Denison.
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 City of Denison water system
The City of Denison water system supplies almost all of Denison. It draws surface water and serves 27,500 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 83% of the 3,525 systems serving 10,001–50,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 1.8 ppb, below the 15 ppb action level that applied. That’s higher than 63% 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. TX0910003.
11 home internet providers serve Denison
100% of 11,126 addresses can get 100/20 Mbps; 81% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Sparklight | Cable, Fiber | 100% | 1,000/50 |
| AT&T | Fixed wireless, DSL | 63% | 25/3 |
| Bluepeak | Fiber | 59% | 5,000/5,000 |
| Metronet | Fiber | 43% | 5,120/5,120 |
| Vexus Fiber | Fiber | 28% | 1,000/1,000 |
| Rise Broadband | Fixed wireless | 77% | 25/5 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Curbside recycling in Denison: every other week
Pickup days, the drop-off and recycling in Denison, from the town’s own site.
Residential Collection Station
300 W. FM 84, Denison, TX 75020
- Mon8 am–5 pm
- Tue8 am–5 pm
- Thu8 am–5 pm
- Fri8 am–5 pm
- Sat8 am–noon
Accepted at the curb
- Aluminum cans
- Cardboard
- Catalogs
- Glass bottles or jar
- Junk mail
- Magazines
- Newspaper
- Phone books
- Plastics #1-5 and #7
- Steel/tin cans
From denisontx.gov, the town’s official site, checked Oct 21, 2026; pages dated 02/01/2023. Rules change: the town’s page is the last word. .
Where your child goes to school
Public school districts and the school path by grade.
Most of Denison (92%) is in Denison Independent School District; parts are in Pottsboro Independent School District (7%).
BSchool gradeSee 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.
Denison spans 2 ZIP codes
ZIP codes where Denison residents live, with the share of the town in each.
| ZIP | Post office name | Share of Denison | ZIP’s residents in Denison |
|---|---|---|---|
| 75020 | Denison, TX | 86% | 88% |
| 75021 | Denison, TX | 14% | 43% |
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 Denison
Who supplies Denison’s drinking water, and has it had violations?
The City of Denison water system (EPA ID TX0910003). It reported no health-based violations to EPA in the five years to October 2026; 83% of systems its size had none. Its latest lead 90th percentile was 1.8 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Denison?
Oncor (Oncor Electric Delivery Co.), an investor-owned utility.
What internet providers serve Denison?
Sparklight, AT&T, Bluepeak, Metronet, Vexus Fiber, Rise Broadband (FCC, as of December 2025).
What ZIP codes are in Denison?
75020 (86%), 75021 (14%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Denison in?
Denison Independent School District. Parts of the city are in Pottsboro Independent School District.
How do I register to vote in Denison?
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 Grayson 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: Denison’s own website (denisontx.gov), read Oct 21, 2026, pickup and drop-off facts extracted and checked against the page they came from.
- 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.