POMONA
| Official name: | Pomona Assembly Center | Location: | Pomona, California |
|---|---|---|---|
| Coordinates: | 34.08° N, 117.77° W | Opening date: | May 7, 1942 |
| Peak population: | 5,434 | Date of peak: | July 20, 1942 |
| Closing date: | August 24, 1942 |
Fairground barracks before Heart Mountain
At the Los Angeles County Fairgrounds in Pomona, the Army confined Japanese Americans from Los Angeles, San Francisco, and Santa Clara Counties. The site lay only about twenty miles from the much larger detention center at Santa Anita.
Pomona operated from May to August 1942 and held more than 5,000 people at its peak. Most were subsequently transferred to Heart Mountain, Wyoming. The fairgrounds then served military purposes, as the temporary barracks passed from one wartime use to another.
Sources: Densho Encyclopedia · Pomona
Across the assembly centers
Following their forced removal from the West Coast (described by the government as “evacuation”), Japanese Americans were initially confined in temporary detention centers called “assembly centers” before their eventual assignment to one of ten incarceration camps in the interior, officially designated “war relocation centers” and operated by the new civilian agency, the War Relocation Authority (WRA). The fifteen hastily constructed temporary detention centers known as “assembly centers” held the 92,000 individuals of Japanese ancestry forcibly removed under Executive Order 9066.
The table and the collection below cover all fifteen assembly centers. Each object’s caption identifies the people, places, and events it documents. Its place on this page does not assign it to this center.
| “Assembly Center” | Maximum Population | Dates Occupied |
|---|---|---|
| Fresno, CA | 5,120 (Sept. 4) | May 6 – Oct. 30 |
| Marysville, CA | 2,451 (June 2) | May 8 – June 29 |
| Mayer, AZ | 245 (May 25) | May 7 – June 2 |
| Merced, CA | 4,508 (June 3) | May 6 – Sept. 15 |
| Pinedale, CA | 4,792 (June 29) | May 7 – July 23 |
| Pomona, CA | 5,434 (July 20) | May 7 – Aug. 24 |
| Portland, OR | 3,676 (June 6) | May 2 – Sept. 10 |
| Sacramento, CA | 4,739 (May 30) | May 6 – June 26 |
| Puyallup, WA | 7,390 (July 25) | April 28 – Sept. 12 |
| Salinas, CA | 3,586 (June 23) | April 27 – July 4 |
| Santa Anita, CA | 18,719 (Aug. 23) | March 27 – Oct. 27 |
| Stockton, CA | 4,271 (May 21) | May 10 – Oct. 17 |
| Tanforan, CA | 7,816 (July 25) | April 28 – Oct. 13 |
| Tulare, CA | 4,978 (Aug. 11) | April 20 – Sept. 4 |
| Turlock, CA | 3,661 (June 2) | April 30 – Aug. 12 |
