Florence Ferguson House · Photo: Marradez · CC BY-SA 3.0Living in Colfax, WA: what to set up and who to call
Every home in Colfax is in ZIP code 99111. Almost every address in Colfax can get fiber (98%, by the FCC’s map).
I’m new in town
What to set up in Colfax, 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 Colfax.
Power comes from Avista
Avista (Avista Corp.), an investor-owned utility, serves all of Colfax. Its homes paid an average of 14.2¢ per kWh in 2025, about $130 a month (its average across Washington).
Start or move service: avistacorp.com · (509) 489-0500
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from City of Colfax Water Department
City of Colfax Water Department supplies almost all of Colfax. It draws ground water and serves 3,507 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 2022–Dec 2024, was 3.8 ppb, below the 15 ppb action level that applied. That’s higher than 87% 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. WA5314000.
7 home internet providers serve Colfax
99% of 1,295 addresses can get 100/20 Mbps; 98% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Colfax Cable Company | Fiber | 98% | 1,000/1,000 |
| CenturyLink | DSL | 76% | 10/1 |
| Verizon | Fixed wireless | 87% | 300/20 |
| First Step Internet | Fixed wireless | 80% | 25/4 |
| T-Mobile | Fixed wireless | 32% | 100/20 |
| AT&T | Fixed wireless | 8% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
Trash and recycling in Colfax
Pickup days, the drop-off and recycling in Colfax, from the town’s own site.
We couldn’t find pickup days or drop-off hours. Check colfaxwa.org →
From colfaxwa.org, the town’s official site, checked Oct 21, 2026. 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.
Colfax is in Colfax School District.
ASchool 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 Sep 2024; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Colfax is in ZIP code 99111
ZIP codes where Colfax residents live, with the share of the town in each.
| ZIP | Post office name | Share of Colfax | ZIP’s residents in Colfax |
|---|---|---|---|
| 99111 | Colfax, WA | 100% | 69% |
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 Colfax
Who supplies Colfax’s drinking water, and has it had violations?
City of Colfax Water Department (EPA ID WA5314000). 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 3.8 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Colfax?
Avista (Avista Corp.), an investor-owned utility. Its homes paid about 14.2¢ per kWh in 2025 (EIA).
What internet providers serve Colfax?
Colfax Cable Company, CenturyLink, Verizon, First Step Internet, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Colfax?
99111. Census 2020 ZIP Code Tabulation Areas.
What school district is Colfax in?
Colfax School District.
How do I register to vote in Colfax?
In Washington you can register online until 8 days before Election Day, in person up to and including Election Day, or by mail (received 8 days before). Elections here are run by the Whitman County Auditor. Check your registration at voter.votewa.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: Colfax’s own website (colfaxwa.org), 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 Sep 30, 2026 (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.