Living in Colonial Heights, TN: what to set up and who to call
Colonial Heights has no town government of its own, so Sullivan County runs its elections and most services, and its children attend Sullivan County School District. Power in Colonial Heights comes from Johnson City, a municipal utility rather than a private company.
I’m new in town
What to set up in Colonial Heights, 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 Colonial Heights.
Power comes from Johnson City
Johnson City (Johnson City - (TN)), a municipal utility, serves 96.8% of Colonial Heights residents. Its homes paid an average of 13.2¢ per kWh in 2025, about $156 a month (its average across Tennessee).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Kingsport Water Dept
Kingsport Water Dept supplies almost all of Colonial Heights. It draws surface water (EPA lists Bloomingdale Utility District and Johnson City Water Dept as sellers) and serves 107,739 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 86% of the 332 systems serving 100,001–250,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2026–Dec 2028, was 1.0 ppb, below the 15 ppb action level that applied. That’s lower than 59% 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. TN0000349.
6 home internet providers serve Colonial Heights
100% of 1,347 addresses can get 100/20 Mbps; 96% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Spectrum | Cable, Fiber | 99% | 1,000/35 |
| BrightRidge | Fiber | 95% | 10,000/10,000 |
| Brightspeed | Fiber, DSL | 84% | 2,000/2,000 |
| T-Mobile | Fixed wireless | 93% | 100/20 |
| Verizon | Fixed wireless | 88% | 300/20 |
| AT&T | Fixed wireless | 64% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Colonial Heights’ trash rules yet
Pickup rules, the dump and recycling in Colonial Heights.
Where your child goes to school
Public school districts and the school path by grade.
Colonial Heights is in Sullivan County School District.
C+School gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Colonial Heights is unincorporated, so Sullivan County is the local government.
Election office: FVAP local election office directory, updated Sep 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Colonial Heights spans 2 ZIP codes
ZIP codes where Colonial Heights residents live, with the share of the town in each.
| ZIP | Post office name | Share of Colonial Heights | ZIP’s residents in Colonial Heights |
|---|---|---|---|
| 37663 | Kingsport, TN | 98% | 21% |
| 37664 | Kingsport, TN | 2% | 0% |
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 Colonial Heights
Who supplies Colonial Heights’ drinking water, and has it had violations?
Kingsport Water Dept (EPA ID TN0000349). It reported no health-based violations to EPA in the five years to October 2026; 86% of systems its size had none. Its latest lead 90th percentile was 1.0 ppb (Jan 2026–Dec 2028), against a 15 ppb action level.
Who provides electricity in Colonial Heights?
Johnson City (Johnson City - (TN)), a municipal utility. Its homes paid about 13.2¢ per kWh in 2025 (EIA).
What internet providers serve Colonial Heights?
Spectrum, BrightRidge, Brightspeed, T-Mobile, Verizon, AT&T (FCC, as of December 2025).
What ZIP codes are in Colonial Heights?
37663 (98%), 37664 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Colonial Heights in?
Sullivan County School District.
How do I register to vote in Colonial Heights?
In Tennessee you can register online until 30 days before Election Day, in person until 30 days before Election Day, or by mail (postmarked 30 days before). Elections here are run by the Sullivan County Election Commission. Check your registration at tnmap.tn.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.