99111 ZIP Code, Colfax, WA
99111 is a ZIP code in Colfax, Washington in Whitman County. It covers 307 square miles of land. The closest ZIP codes are 99102, 99174 and 99163. 4,038 people live here in 1,714 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (73%). Median household income is $73,393, below the Washington median of $98,141.
Quick facts
- Mailing city: Colfax, WA
- County: Whitman County
- Land area: 307 sq mi
- Population: 4,038
- Median household income: $73,393
Key figures
| Measure | Value |
|---|---|
| Residents | 4,038 |
| Households | 1,714 |
| Median household income | $73,393 |
| Income per person | $37,809 |
| Median age | 41.8 |
| Homeowners | 72.9% |
| Median home value | $295,800 |
| Median rent | $953 |
| Bachelor's degree or higher | 30.5% |
| Average commute (minutes) | 17.8 |
| Households with kids under 18 | 28.1% |
| Moved in the past year | 13.3% |
| Below the poverty line | 10.1% |
| Broadband internet | 86.8% |
| Speak a non-English language at home | 3.1% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.4% |
| $10–15K | 3.9% |
| $15–25K | 5.5% |
| $25–35K | 6.5% |
| $35–50K | 9.1% |
| $50–75K | 20.1% |
| $75–100K | 14.2% |
| $100–150K | 20.0% |
| $150–200K | 8.4% |
| $200K+ | 6.8% |
Age
| % of all residents | Value |
|---|---|
| <10 | 12.6% |
| 10–19 | 12.1% |
| 20–24 | 2.8% |
| 25–34 | 10.2% |
| 35–44 | 14.2% |
| 45–54 | 9.4% |
| 55–64 | 19.0% |
| 65–74 | 9.7% |
| 75+ | 10.0% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 41.8% |
| Owned outright | 23.1% |
| Rented | 23.9% |
| Vacant | 11.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 65.7% |
| Townhome | 1.2% |
| 2–4 units | 10.5% |
| 5–19 units | 7.0% |
| 20+ units | 5.8% |
| Mobile / other | 9.7% |
Businesses in 99111
134 business establishments with 1,348 employees (ZIP Codes Business Patterns 2023).
- Construction: 21
- Retail Trade: 17
- Other Services (except Public Administration): 15
- Health Care and Social Assistance: 14
- Wholesale Trade: 12
- Finance and Insurance: 10
- Accommodation and Food Services: 10
- Transportation and Warehousing: 7
EDDM carrier routes
See every USPS carrier route in 99111 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 99102 — Albion town, WA (10.5 mi)
- 99174 — Steptoe CDP, WA (11.4 mi)
- 99163 — Pullman city, WA (14 mi)
- 99161 — Palouse city, WA (14.7 mi)
- 99125 — Endicott town, WA (15.8 mi)
- 99130 — Garfield town, WA (16 mi)
- 99176 (16.4 mi)
- 99171 — St. John town, WA (19.3 mi)
Areas that include 99111
- Colfax, WA ZIP codes — 1 ZIP code
- Steptoe, WA ZIP codes — 2 ZIP codes
- Whitman County ZIP codes — 20 ZIP codes
- Washington ZIP code data
Mail every home in 99111
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 99111, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 99111 in?
- 99111 is a Colfax, WA mailing address. By land area, 1% lies inside Colfax; the rest is outside any Census-defined city or community.
- What county is 99111 in?
- 99111 is in Whitman County.
- What is the population of 99111?
- About 4,038 people (±377), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 4,029.
- What is the median household income in 99111?
- $73,393 (±$14,782), compared with $98,141 for Washington as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 99111?
- EDDM2GO's stored route library does not include 99111 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 99111?
- The closest, measured center to center: 99102 (10.5 mi, Albion), 99174 (11.4 mi, Steptoe), 99163 (14 mi, Pullman), 99161 (14.7 mi, Palouse), 99125 (15.8 mi, Endicott) and 99130 (16 mi, Garfield).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.