Grand Mound, WA ZIP Codes
2 ZIP codes serve Grand Mound, Washington: 98531 and 98579. Together they are home to 41,385 residents in 16,146 households. That is more than the 3,287 people counted inside Grand Mound Census-designated place, because these ZIP codes reach past its boundary. Median household income ranges from $63,406 in 98531 to $99,411 in 98579.
Grand Mound Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 3,287 |
| Households | 1,211 |
| Median household income | $72,426 |
| Median home value | $411,400 |
| Median age | 35.1 |
| Median rent | $1,426 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 41,385 |
| Households (sum of ZIP codes) | 16,146 |
| Median household income, range across ZIP codes | $63,406 (98531) to $99,411 (98579) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $74,607 |
| Homeowners | 70.2% |
| Households with kids under 18 | 28.1% |
| Moved in the past year | 11.0% |
| Carrier routes in EDDM2GO's route library | 26 routes, 15,708 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in Grand Mound: 98579 ($99,411)
- Most residents: 98531 (27,337 people)
- Highest homeownership: 98579 (80.2% own their home)
- Most households with kids: 98579 (28.2% of households)
- Most new movers: 98531 (12.4% moved in last year)
- Youngest median age: 98531 (40.3 years)
- Highest median home value: 98579 ($463,400)
Every ZIP code in Grand Mound
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 98531 | Centralia | 27,337 | 11,123 | $63,406 | $343,000 | 65.7% | 28.0% | 12.4% | 17 | 11,673 | 1% of its land |
| 98579 | Rochester | 14,048 | 5,023 | $99,411 | $463,400 | 80.2% | 28.2% | 8.4% | 9 | 4,972 | 3% of its land |
A ZIP code is listed for Grand Mound when at least 10% of its land lies inside the Grand Mound Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Grand Mound. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Grand Mound.
Counties
- Thurston County — 15 ZIP codes
- Lewis County — 22 ZIP codes
Nearby cities sharing these ZIP codes
Price a mailing to Grand Mound ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Grand Mound, WA?
- 98531 and 98579. A ZIP code is listed for Grand Mound when at least 10% of its land lies inside the Grand Mound Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Grand Mound.
- What is the population of Grand Mound, WA?
- The Census Bureau counts 3,287 residents inside Grand Mound Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve Grand Mound hold 41,385 residents in all.
- What is the median household income in Grand Mound, WA?
- $72,426 inside Grand Mound Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $63,406 to $99,411.
- Which Grand Mound ZIP code has the highest median household income?
- 98579, at $99,411, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Grand Mound, WA?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 26 carrier routes reaching 15,708 residential and 935 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.