La Crescenta-Montrose is an unincorporated community located in Los Angeles County, California, in the United States. The area is defined by its surrounding geography, bordered by Glendale to the south and west, La Cañada Flintridge to the east, and the Angeles National Forest to the north.
The La Crescenta-Montrose Census-Designated Place (CDP) covers an area of approximately 3.4 square miles (8.8 km2). According to data from the United States Census Bureau, the population was 19,997 as of the 2020 census, reflecting a steady increase from 18,532 in 2000 and 19,653 in 2010.