Photo: USFWS Mountain-Prairie · CC BY 2.0Living in Derby, CO: what to set up and who to call
Derby has no town government of its own, so Adams County runs its elections and most services, and its children attend Adams County School District 14. Derby has its own drop-off, Watermill Water Supply.
I’m new in town
What to set up in Derby, 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 Derby.
Power comes from Xcel Energy
Xcel Energy (Public Service Co. of Colorado), an investor-owned utility, serves all of Derby. 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 South Adams County WSD
South Adams County WSD supplies almost all of Derby. It buys treated surface water (EPA lists Denver Water Board as seller) and serves 75,559 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 90% of the 597 systems serving 50,001–100,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 1.0 ppb. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
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. CO0101140.
8 home internet providers serve Derby
100% of 2,484 addresses can get 100/20 Mbps; 74% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 99% | 2,000/250 |
| Quantum Fiber | Fiber | 74% | 2,000/1,000 |
| CenturyLink | DSL, Fiber | 19% | 940/940 |
| LiveWireNet | Fixed wireless | 100% | 250/100 |
| Rise Broadband | Fixed wireless | 86% | 25/5 |
| Verizon | Fixed wireless | 84% | 300/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Derby has its own drop-off: Watermill Water Supply
Where to take trash and recycling in Derby, and where the rules are.
Watermill Water Supply
Before you go, check the rules with the town.
OpenStreetMap, as of Oct 9, 2026 (last edited Sep 2017). © OpenStreetMap contributors.
Where your child goes to school
Public school districts and the school path by grade.
Derby is in Adams County School District 14.
D−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
Derby is unincorporated, so Adams 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.
Derby spans 3 ZIP codes
ZIP codes where Derby residents live, with the share of the town in each.
| ZIP | Post office name | Share of Derby | ZIP’s residents in Derby |
|---|---|---|---|
| 80022 | Commerce City, CO | 83% | 12% |
| 80640 | Henderson, CO | 15% | 10% |
| 80024 | Dupont, CO | 2% | 100% |
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 Derby
Who supplies Derby’s drinking water, and has it had violations?
South Adams County WSD (EPA ID CO0101140). It reported no health-based violations to EPA in the five years to October 2026; 90% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Derby?
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 Derby?
Xfinity, Quantum Fiber, CenturyLink, LiveWireNet, Rise Broadband, Verizon (FCC, as of December 2025).
What ZIP codes are in Derby?
80022 (83%), 80640 (15%), 80024 (2%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Derby in?
Adams County School District 14.
How do I register to vote in Derby?
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 Adams County Clerk and Recorder. 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.