Map of oil, gas and geothermal fields in the Los Angeles area, 2001. Courtesy of California Geologic Energy Management Division, California Department of Conservation
Click on map for larger image.
Los Angeles County has 4,465 active oil wells, approximately a quarter of which are offshore. Los Angeles County's total 2025 oil production was 11,559,075 barrels (or almost 501.7 million gallons), about 15% of all oil production in California. Below are listed the 45 producing oil fields in the county.
In January 2023, due to long-time concerns over the environmental and health impact of oil and gas extraction operations in urbanized areas, the Los Angeles County Board of Supervisors banned any new oil and gas extraction operations within the county and set a 20-year phaseout for existing operations.
Note: Some oil fields in this list include production and oil well figures from those oil fields that cross county lines between L.A. County and adjacent counties. We ranked oil fields here by oil production within L.A. County.
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
|---|---|---|---|---|
| Wilmington | 1932 | Onshore | 6,974,830 | 1,505 (791 offshore) |
| Inglewood | 1948 | Onshore | 1,160,046 | 419 |
| Long Beach | 1921 | Onshore | 1,133,976 | 226 |
| Beverly Hills | 1900 | Onshore | 262,197 | 101 |
| Sansinena | 1898 | Onshore | 195,071 | 139 |
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
| Montebello | 1917 | Onshore | 193,813 | 41 |
| Seal Beach 2 | 1924 | Onshore | 189,509 from L.A. County; 305,227 from entire field | 73 in L.A County; 138 in entire field |
| Santa Fe Springs | 1919 | Onshore | 151,852 | 131 |
| Placerita | 1920 | Onshore | 148,585 | 115 |
| San Vicente | 1968 | Onshore | 142,894 | 34 |
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
| Belmont Offshore 2 | 1948 | Offshore | 141,827 from L.A. County; 192,843 from entire field | 23 in L.A. County; 36 in entire field |
| Torrance | 1922 | Onshore | 108,806 | 52 |
| Whittier | 1896 | Onshore | 88,077 | 28 |
| Aliso Canyon 3 | 1938 | Onshore | 76,554 | 22 |
| Cascade | 1954 | Onshore | 75,188 | 18 |
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
| Las Cienegas | 1961 | Onshore | 72,833 | 20 |
| Oat Mountain | 1946 | Onshore | 48,515 | 9 |
| Rosecrans | 1927 | Onshore | 41,682 | 39 |
| Salt Lake | 1902 | Onshore | 40,896 | 7 |
| Brea-Olinda 2 | 1880 | Onshore | 35,665 from L.A. County; 756,405 from entire field | 15 in L.A. County; 408 in entire field |
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
| Los Angeles Downtown | 1965 | Onshore | 26,111 | 8 |
| Playa Del Rey | 1929 | Onshore | 21,804 | 7 |
| Hasley Canyon | 1944 | Onshore | 21,704 | 8 |
| Cheviot Hills | 1958 | Onshore | 18,421 | 10 |
| Honor Rancho | 1950 | Onshore | 14,425 | 21 |
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
| Oak Canyon | 1945 | Onshore | 14,154 | 5 |
| Sawtelle | 1965 | Onshore | 13,192 | 12 |
| Del Valle | 1940 | Onshore | 12,831 | 26 |
| El Segundo | 1935 | Onshore | 10,481 | 2 |
| Hyperion | 1944 | Onshore | 10,064 | 1 |
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
| Castaic Hills | 1951 | Onshore | 9,173 | 4 |
| Old Wilmington | 1932 | Offshore | 6,630 | 2 |
| Salt Lake, South | 1970 | Onshore | 6,358 | 13 |
| Walnut | 1948 | Onshore | 6,259 | 7 |
| Ramona 3 | 1943 | Onshore | 3,951 from L.A. County; 17,070 from entire field | 9 in L.A. County; 50 in entire field |
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
| Tapia | 1957 | Onshore | 3,454 | 10 |
| Long Beach Airport | 1954 | Onshore | 3,300 | 1 |
| Bandini | 1953 | Onshore | 3,222 | 6 |
| Rosecrans, South | 1939 | Onshore | 2,333 | 5 |
| Howard Townsite | 1947 | Onshore | 2,272 | 2 |
| Oil Field | Year Discovered | Field Type | 2025 Oil Production (bbl1) | 2025 Active Wells |
| Wayside Canyon | 1962 | Onshore | 1,904 | 4 |
| Los Angeles City | 1890 | Onshore | 1,582 | 11 |
| Dominguez | 1923 | Onshore | 247 | 6 |
| Los Angeles, East | 1946 | Onshore | 0 | 0 |
| Newhall-Potrero | 1937 | Onshore | 0 | 0 |
(1) bbl - barrels of oil (42-gallons each)
(2) Straddles Los Angeles and Orange Counties
(3) Straddles Los Angeles and Ventura Counties
Source: California Dept. of Conservation, California Geologic Energy Management Division
Edward Doheny dug the first oil well in Los Angeles in 1892. It came to be part of what became known as the Los Angeles City Oil Field.
The Wilmington Oil Field is ranked among California's ten most productive oil fields and ranks among the top 20 most productive oil fields in the nation.
