Custer, WA ZIP Codes
2 ZIP codes serve Custer, Washington: 98248 and 98240. Together they are home to 32,091 residents in 11,348 households. That is more than the 477 people counted inside Custer Census-designated place, because these ZIP codes reach past its boundary. Median household income ranges from $91,060 in 98248 to $110,116 in 98240.
Custer Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 477 |
| Households | 187 |
| Median household income | $93,598 |
| Median home value | $527,600 |
| Median age | 34.8 |
| Median rent | not published |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 32,091 |
| Households (sum of ZIP codes) | 11,348 |
| Median household income, range across ZIP codes | $91,060 (98248) to $110,116 (98240) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $93,184 |
| Homeowners | 78.5% |
| Households with kids under 18 | 36.2% |
| Moved in the past year | 8.7% |
| Carrier routes in EDDM2GO's route library | 22 routes, 11,652 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in Custer: 98240 ($110,116)
- Most residents: 98248 (28,498 people)
- Highest homeownership: 98240 (93.0% own their home)
- Most households with kids: 98240 (47.1% of households)
- Most new movers: 98240 (17.0% moved in last year)
- Youngest median age: 98240 (36.9 years)
- Highest median home value: 98240 ($619,700)
Every ZIP code in Custer
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 98248 | Ferndale | 28,498 | 10,083 | $91,060 | $589,600 | 76.7% | 34.8% | 7.6% | 19 | 11,103 | 1% of its land |
| 98240 | Custer | 3,593 | 1,265 | $110,116 | $619,700 | 93.0% | 47.1% | 17.0% | 3 | 1,168 | 7% of its land; mailing city |
A ZIP code is listed for Custer when at least 10% of its land lies inside the Custer Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Custer. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Custer.
Counties
- Whatcom County — 17 ZIP codes
Nearby cities sharing these ZIP codes
- Ferndale — 1 ZIP code
Price a mailing to Custer ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Custer, WA?
- 98248 and 98240. A ZIP code is listed for Custer when at least 10% of its land lies inside the Custer Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Custer.
- What is the population of Custer, WA?
- The Census Bureau counts 477 residents inside Custer Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve Custer hold 32,091 residents in all.
- What is the median household income in Custer, WA?
- $93,598 inside Custer Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $91,060 to $110,116.
- Which Custer ZIP code has the highest median household income?
- 98240, at $110,116, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Custer, WA?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 22 carrier routes reaching 11,652 residential and 619 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.