Martha Weiser House · Photo: Davidmendosa · CC BY-SA 3.0Living in Gunbarrel, CO: what to set up and who to call
Gunbarrel has no town government of its own, so Boulder County runs its elections and most services, and its children attend Boulder Valley School District RE-2. The closest public drop-off to Gunbarrel is Western Disposal, 3 miles out; the town decides whether residents may use it.
I’m new in town
What to set up in Gunbarrel, 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 Gunbarrel.
Power comes from Xcel Energy
Xcel Energy (Public Service Co. of Colorado), an investor-owned utility, serves 97.7% of Gunbarrel residents. Its homes paid an average of 15.9¢ per kWh in 2025, about $93 a month (its average across Colorado).
Start or move service: xcelenergy.com · (800) 895-4999
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Boulder water system
The City of Boulder water system supplies Gunbarrel: about 91% of residents live in its service area. Left Hand WD serves another 9%. It draws surface water and serves 166,080 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 2023–Dec 2025, was 2.0 ppb, below the 15 ppb action level that applied. That’s higher than 64% 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. CO0107152.
8 home internet providers serve Gunbarrel
100% of 2,930 addresses can get 100/20 Mbps; 0% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| CenturyLink | DSL | 65% | 140/20 |
| Ayva Networks | Fixed wireless | 99% | 2,500/2,500 |
| Verizon | Fixed wireless | 95% | 300/20 |
| LiveWireNet | Fixed wireless | 72% | 250/100 |
| T-Mobile | Fixed wireless | 43% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
The nearest public drop-off is 3 miles away
Pickup rules, the dump and recycling in Gunbarrel.
Western Disposal
5880 Butte Mill Road, Boulder, CO, 80301
This isn’t Gunbarrel’s own facility. Whether Gunbarrel residents may use it is the town’s rule: check the town’s office.
OpenStreetMap, as of Oct 9, 2026. © OpenStreetMap contributors.
Where your child goes to school
Public school districts and the school path by grade.
Most of Gunbarrel (89%) is in Boulder Valley School District RE-2; parts are in St. Vrain Valley School District RE 1J (11%).
ASchool 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
Gunbarrel is unincorporated, so Boulder 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.
Gunbarrel spans 2 ZIP codes
ZIP codes where Gunbarrel residents live, with the share of the town in each.
| ZIP | Post office name | Share of Gunbarrel | ZIP’s residents in Gunbarrel |
|---|---|---|---|
| 80301 | Boulder, CO | 92% | 34% |
| 80503 | Longmont, CO | 8% | 2% |
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 Gunbarrel
Who supplies Gunbarrel’s drinking water, and has it had violations?
The City of Boulder water system (EPA ID CO0107152). 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 2.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Gunbarrel?
Xcel Energy (Public Service Co. of Colorado), an investor-owned utility. Its homes paid about 15.9¢ per kWh in 2025 (EIA).
What internet providers serve Gunbarrel?
Xfinity, CenturyLink, Ayva Networks, Verizon, LiveWireNet, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Gunbarrel?
80301 (92%), 80503 (8%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Gunbarrel in?
Boulder Valley School District RE-2. Parts of the city are in St. Vrain Valley School District RE 1J.
How do I register to vote in Gunbarrel?
In Colorado you can register online until 8 days before Election Day, in person up to and including Election Day, or by mail (postmarked 8 days before). Elections here are run by the Boulder County Clerk and Recorder, Elections Division. Check your registration at sos.state.co.us.
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.