Gilliam County, OR ZIP Codes
3 ZIP codes cover all or part of Gilliam County, Oregon: 97823, 97812 and 97830. The Census Bureau counts 1,971 residents in the county, with a median household income of $66,917 and a median home value of $189,300. Its largest communities include Arlington, Condon and Lonerock.
Gilliam County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 1,971 |
| Households | 875 |
| Median household income | $66,917 |
| Median home value | $189,300 |
| Median age | 50.1 |
| Median rent | $1,125 |
All 3 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 2,746 |
| Households (sum of ZIP codes) | 1,239 |
| Median household income, range across ZIP codes | $57,727 (97823) to $57,727 (97823) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $57,727 |
| Homeowners | 75.6% |
| Households with kids under 18 | 22.8% |
| Moved in the past year | 15.4% |
| Carrier routes in EDDM2GO's route library | 3 routes, 147 homes (2 of 3 ZIP codes) |
Every ZIP code in Gilliam County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 97823 | Condon | 1,014 | 506 | $57,727 | $150,500 | 75.3% | 18.2% | 18.2% | — | — | 98% of its land |
| 97812 | Arlington | 932 | 358 | $77,258 | $293,500 | 71.5% | 28.5% | 17.9% | 1 | 70 | 100% of its land |
| 97830 | Fossil | 800 | 375 | $54,583 | $250,000 | 80.0% | 23.7% | 9.0% | 2 | 86 | 13% of its land |
A ZIP code is listed for Gilliam 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
- Arlington — 690 residents · 1 ZIP code
- Condon — 623 residents · 1 ZIP code
- Lonerock — 36 residents · 1 ZIP code
Price a mailing to Gilliam County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Gilliam County, OR?
- 97823, 97812 and 97830. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Gilliam County?
- 1,971 residents in 875 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Gilliam County?
- $66,917 for the county as a whole. Its ZIP codes range from $57,727 (97823) to $57,727 (97823).
- How many carrier routes and mailboxes are in Gilliam County?
- For the 2 of 3 ZIP codes in EDDM2GO's stored route library: 3 carrier routes reaching 147 residential and 9 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.