Imperial County, California
Historic newspapers, landmarks, and county history layers for genealogists and local historians.
At a glance
SummaryThe National Register of Historic Places includes 10 listed properties in the county, first listed in 1980. Most listings are in or near Calexico, Ocotillo, Yuma.
Summary generated automatically from the source data on this page.
Newspapers
Library of CongressNewspaper directory data for California is not yet loaded on this site. Browse Imperial titles at the Library of Congress.
National Register of Historic Places
NPS NRHP3 of 10 listings mapped; some locations are restricted by NPS to protect sensitive sites.
10 listed properties
| Property | City | Listed |
|---|---|---|
| Calexico Carnegie Library | Calexico | 2005 |
| Desert View Tower | Ocotillo | 1980 |
| Southwest Lake Cahuilla Recessional Shoreline Archeological District | Salton City | 1999 |
| Spoke Wheel Rock Alignment | Ocotillo | 2003 |
| Stonehead (L-7) | Yuma | 1987 |
| US Inspection Station-Calexico | Calexico | 1992 |
| US Post Office-El Centro Main | El Centro | 1985 |
| Winterhaven Anthropomorph (L-8) | Yuma | 1987 |
| Winterhaven Anthropomorph and Bowknot, L-9 | Winterhaven | 1985 |
| Yuha Basin Discontiguous District | Plaster City | 1982 |
Source: National Park Service, National Register of Historic Places. Property links open NRHP nomination files at the National Archives.
County formation
Newberry AHCBImperial was formed in 1907 (1907-08-12) from San Diego.
IMPERIAL created from SAN DIEGO.
Source: Newberry Library, Atlas of Historical County Boundaries.
Population by decade
CensusImperial County population from 1910 to 2020 (Census historical series).
| 1910 | 1920 | 1940 | 1950 | 1960 | 1980 | 2000 | 2020 |
|---|---|---|---|---|---|---|---|
| 13,591 | 43,453 | 59,740 | 62,975 | 72,105 | 92,110 | 142,361 | 179,702 |
Sources: U.S. Census Bureau historical county population (Forstall 1790–1990) and public-domain / CC0 county population series through 2020.
Cemeteries & historical places
USGS GNIS9 cemeteries and 5 historical populated places (ghost towns / former settlements) recorded in USGS GNIS for this county.
Cemeteries — 9 of 9 listed
| Name |
|---|
| Amos Cemetery |
| Evergreen Cemetery |
| Hedges Cemetery |
| Imperial Cemetery |
| Memory Gardens Cemetery |
| Mountain View Cemetery |
| Potholes Cemetery |
| Riverview Cemetery |
| Terrace Park Cemetery |
Historical populated places — 5 of 5
| Name |
|---|
| Bernice |
| Butlers |
| Mayflower |
| Shamrock |
| Squeaky Springs |
Source: USGS Geographic Names Information System (public domain). Cemeteries from the 2021 NationalFile archive; historical places from GNIS HistoricalFeatures topical extract.
Historical markers
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Search HMdb for Imperial County, California
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