Grant County, WA ZIP Codes
18 ZIP codes cover all or part of Grant County, Washington. The Census Bureau counts 101,799 residents in the county, with a median household income of $73,267 and a median home value of $299,500. Median household income ranges from $57,034 in 99357 to $87,714 in 98848. Its largest communities include Moses Lake, Ephrata, Quincy, Cascade Valley and Moses Lake North.
Grant County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 101,799 |
| Households | 35,398 |
| Median household income | $73,267 |
| Median home value | $299,500 |
| Median age | 33.7 |
| Median rent | $1,116 |
All 18 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 120,492 |
| Households (sum of ZIP codes) | 40,717 |
| Median household income, range across ZIP codes | $57,034 (99357) to $87,714 (98848) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $72,071 |
| Homeowners | 66.3% |
| Households with kids under 18 | 38.3% |
| Moved in the past year | 12.2% |
| Carrier routes in EDDM2GO's route library | 61 routes, 36,931 homes (7 of 18 ZIP codes) |
Top facts
- Highest median household income in Grant County: 98848 ($87,714)
- Most residents: 98837 (49,455 people)
- Highest homeownership: 99133 (75.2% own their home)
- Most households with kids: 99321 (84.4% of households)
- Most new movers: 98848 (17.0% moved in last year)
- Youngest median age: 99321 (22.5 years)
- Highest median home value: 99349 ($427,800)
Every ZIP code in Grant County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 98837 | Moses Lake | 49,455 | 18,264 | $74,586 | $315,000 | 66.6% | 32.6% | 16.2% | 29 | 20,198 | 100% of its land |
| 99344 | Othello | 19,534 | 5,422 | $64,888 | $281,900 | 65.9% | 49.6% | 5.9% | 10 | 6,328 | 19% of its land |
| 98848 | Quincy | 12,854 | 4,024 | $87,714 | $357,500 | 67.7% | 41.3% | 17.0% | 9 | 5,236 | 98% of its land |
| 98823 | Ephrata | 12,188 | 4,379 | $73,074 | $267,300 | 67.3% | 42.6% | 9.7% | 8 | 5,254 | 73% of its land |
| 99349 | Mattawa | 8,143 | 2,388 | $61,333 | $427,800 | 54.3% | 53.5% | 9.0% | — | — | 100% of its land |
| 98851 | Soap Lake | 4,437 | 1,604 | $63,333 | $242,800 | 66.5% | 28.2% | 9.0% | 2 | 998 | 100% of its land |
| 98857 | Warden | 4,062 | 1,315 | $61,860 | $213,300 | 70.4% | 40.1% | 9.2% | 2 | 791 | 69% of its land |
| 99357 | Royal City | 3,843 | 996 | $57,034 | $326,700 | 58.3% | 56.2% | 9.9% | — | — | 100% of its land |
| 99115 | Coulee City | 1,369 | 552 | $62,708 | $247,200 | 69.7% | 19.2% | 3.1% | — | — | 30% of its land |
| 99133 | Grand Coulee | 1,115 | 536 | $68,854 | $229,900 | 75.2% | 24.3% | 3.0% | — | — | 11% of its land |
| 99321 | Beverly | 1,047 | 173 | $75,795 | — | 42.2% | 84.4% | 8.4% | — | — | 100% of its land |
| 99123 | Electric City | 977 | 443 | $87,841 | $245,600 | 81.5% | 19.0% | 5.1% | — | — | 100% of its land |
| 99103 | Almira | 556 | 224 | $53,125 | $230,900 | 75.0% | 24.1% | 10.6% | — | — | 24% of its land |
| 99135 | Hartline | 395 | 167 | $80,469 | — | 92.8% | 33.5% | 2.5% | — | — | 100% of its land |
| 98860 | Wilson Creek | 277 | 124 | $62,500 | $185,100 | 73.4% | 19.4% | 7.1% | — | — | 100% of its land |
| 98824 | George | 147 | 49 | $44,028 | $176,800 | 55.1% | 49.0% | 18.0% | — | — | 100% of its land |
| 98832 | Marlin | 87 | 55 | $31,964 | $309,100 | 72.7% | 3.6% | 0.0% | 1 | 65 | 70% of its land |
| 98853 | Grant County | 6 | 2 | — | — | 100.0% | 0.0% | 0.0% | — | — | 100% of its land |
A ZIP code is listed for Grant County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Moses Lake — 26,083 residents · 1 ZIP code
- Ephrata — 8,560 residents · 1 ZIP code
- Quincy — 7,998 residents · 1 ZIP code
- Cascade Valley — 4,609 residents · 1 ZIP code
- Moses Lake North — 4,517 residents · 1 ZIP code
- Mattawa — 3,616 residents · 1 ZIP code
- Desert Aire — 2,788 residents · 1 ZIP code
- Warden — 2,581 residents · 1 ZIP code
- Royal City — 1,683 residents · 1 ZIP code
- Lakeview — 1,584 residents · 1 ZIP code
- Soap Lake — 1,508 residents · 1 ZIP code
- Electric City — 820 residents · 1 ZIP code
- George — 669 residents · 2 ZIP codes
- Schwana — 387 residents · 1 ZIP code
- Beverly — 356 residents · 1 ZIP code
- Crescent Bar — 271 residents · 1 ZIP code
- Wheeler — 230 residents · 1 ZIP code
- Wilson Creek — 206 residents · 1 ZIP code
- Hartline — 182 residents · 1 ZIP code
- Sunland Estates — 91 residents · 1 ZIP code
- Krupp (Marlin) — 33 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Grant County — 11 ZIP codes ranked
- ZIP codes with the highest home values in Grant County — 10 ZIP codes ranked
- ZIP codes with the highest homeownership in Grant County — 11 ZIP codes ranked
- ZIP codes with the most families with kids in Grant County — 11 ZIP codes ranked
- ZIP codes with the most new movers in Grant County — 11 ZIP codes ranked
- Youngest ZIP codes in Grant County — 11 ZIP codes ranked
- Oldest ZIP codes in Grant County — 11 ZIP codes ranked
- Fastest-growing ZIP codes in Grant County — 10 ZIP codes ranked
Price a mailing to Grant County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Grant County, WA?
- 98837, 99344, 98848, 98823, 99349, 98851, 98857, 99357, 99115, 99133, 99321, 99123, 99103, 99135, 98860, 98824, 98832 and 98853. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Grant County?
- 101,799 residents in 35,398 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Grant County?
- $73,267 for the county as a whole. Its ZIP codes range from $57,034 (99357) to $87,714 (98848).
- Which Grant County ZIP code has the highest median household income?
- 98848, at $87,714, among ZIP codes with at least 1,000 residents. See the full ranking of Grant County ZIP codes by income.
- How many carrier routes and mailboxes are in Grant County?
- For the 7 of 18 ZIP codes in EDDM2GO's stored route library: 61 carrier routes reaching 36,931 residential and 1,937 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.