Annex, Oregon

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Annex, Oregon
Census-designated place
Annex Oregon.jpg
The town of Annex
USA Oregon location map.svg
Red pog.svg
Annex
Usa edcp location map.svg
Red pog.svg
Annex
Coordinates: 44°14′25″N116°59′04″W / 44.24028°N 116.98444°W / 44.24028; -116.98444
Country United States
State Oregon
County Malheur
Area
[1]
 • Total
2.46 sq mi (6.37 km2)
 • Land2.46 sq mi (6.37 km2)
 • Water0.00 sq mi (0.00 km2)
Elevation
[2]
2,106 ft (642 m)
Population
 (2020) [3]
 • Total
225
 • Density91.50/sq mi (35.32/km2)
Time zone UTC-7 (Mountain (MST))
 • Summer (DST) UTC-6 (MDT)
ZIP code
97914 (Ontario) [4]
Area codes 541 & 458
GNIS feature ID2611714 [2]
FIPS Code 41-02200

Annex is an unincorporated community and census-designated place in Malheur County, Oregon, United States. Its population was 225 as of the 2020 census. [3]

Contents

Geography

The community is located on the south bank of the Snake River across from Weiser, Idaho; a bridge carrying U.S. Route 95 Spur connects the two. It is 17 miles (27 km) north of Ontario, the largest city in Malheur County, via Oregon Route 201, which passes just south of Annex.

According to the U.S. Census Bureau, the Annex CDP has an area of 2.46 square miles (6.37 km2), all land. [5]

Demographics

Historical population
CensusPop.Note%±
2010 235—
2020 225−4.3%
U.S. Decennial Census [6] [5] [3]

Education

Annex is within the Annex School District 29. [7] It operates a K-8 school called the Annex Charter School. [8] In 1967 the Annex School was having a new building established. [9]

As of 1998 students who graduate from Annex attend Weiser High School, of the Weiser School District, in Weiser, Idaho. [10] In 1958, there were 46 students at Weiser High who lived in the Annex and Jefferson school districts. [11]

The section of Malheur County in which this community is located in is in the Treasure Valley Community College district. [12]

References

  1. ↑ "2024 U.S. Gazetteer Files: Oregon". United States Census Bureau. Retrieved July 24, 2025.
  2. 1 2 U.S. Geological Survey Geographic Names Information System: Annex, Oregon
  3. 1 2 3 "P1. Race – Annex CDP, Oregon: 2020 DEC Redistricting Data (PL 94-171)". U.S. Census Bureau. Retrieved July 24, 2025.
  4. ↑ "Annex OR ZIP Code". zipdatamaps.com. 2023. Retrieved June 16, 2023.
  5. 1 2 "2010 Census Gazetteer Files - Places: Oregon". U.S. Census Bureau . Retrieved January 17, 2017.
  6. ↑ "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.
  7. ↑ "2020 CENSUS - SCHOOL DISTRICT REFERENCE MAP: Malheur County, OR" (PDF). U.S. Census Bureau . Retrieved July 15, 2022.
  8. ↑ "Home". Annex Charter School. Retrieved July 15, 2022. 402 Annex Road | Ontario, Ore. 97914 - Despite the Ontario postal address, it is not in Ontario. Compare with the US Census Bureau school district map here.
  9. ↑ "16 East Oregon Schools Classified as 'Substandard'". The Idaho Sunday Statesman . Boise, Idaho. August 13, 1967. p. D1. - Clipping from Newspapers.com. See text detail
  10. ↑ "Home". Annex School District. February 24, 1999. Archived from the original on February 24, 1999. Retrieved July 17, 2022.
  11. ↑ "School Districts' Reorganization To Be Outlined". The Idaho Statesman . Boise, Idaho. August 9, 1958. p. 9 (of second section). - See clipping from Newspapers.com.
  12. ↑ "Oregon Community Colleges and Community College Districts" (PDF). Oregon Department of Community Colleges & Workforce Development . Retrieved July 17, 2022.


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