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County ZIP codes · Oregon · FIPS 41061

Union County, OR ZIP Codes

Union County, Oregon has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Union County and 1 mainly in a neighboring county; 2 cross the county line. Median household income ranges from $60,766 in 97827 (Elgin) to $80,263 in 97824 (Cove) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Union County?

97814 · Baker City: $65k97824 · Cove: $80k97827 · Elgin: $61k97841 · Imbler: $74k97850 · La Grande: $63k97867 · North Powder: $84k97876 · Summerville: $120k97883 · Union: $65k978149785097883978249782797867978769784197814 · Baker City: $65k97824 · Cove: $80k97827 · Elgin: $61k97841 · Imbler: $74k97850 · La Grande: $63k97867 · North Powder: $84k97876 · Summerville: $120k97883 · Union: $65k978149785097883978249782797867978769784197814 · Baker City: $65k97824 · Cove: $80k97827 · Elgin: $61k97841 · Imbler: $74k97850 · La Grande: $63k97867 · North Powder: $84k97876 · Summerville: $120k97883 · Union: $65k978149785097883978249782797867
The residential ZIP codes of Union County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024).<$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $63,421 and $65,172.

They carry 8 postal town names: La Grande, Baker City, Union, Elgin, Cove, Summerville, North Powder, Imbler.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 8 residential ZIP codes in Union County

7 ZIP codes lie mainly in Union County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Union County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
97850 La Grande 16,903 53 $63k $298k 100%
97883 Union 2,489 8 $65k $239k 100%
97827 Elgin 2,384 12 $61k $263k 100%
97824 Cove 2,117 9 $80k $414k 100%
97876 Summerville 995 17 $120k $436k 100%
97867 North Powder 947 6 $84k $152k 74%
97841 Imbler 370 24 $74k $268k 100%

Partly in Union County

Residential ZIP codes mainly in another county that reach at least 1% into Union County, by their share here
In this county
97814 Baker City 12,590 15 $65k $294k 5%

Download the 8 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

2 ZIP codes of Union County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Union County and in the neighboring counties
ZIPIn UnionElsewhere
978145%Baker County95%
9786774%Baker County26%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Union County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Union County starts with 978.

Three-digit prefixes of Union County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Union County's
PrefixSectional centerHereAll codes
978Portland, OR (SCF 970)854

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.