SAN LUIS OBISPO COUNTY CALIFORNIA CITIES POPULATION San Luis Obispo County is one of the fastest growing counties on the Central California Coast. Farm land turned to vineyards, tourism on the increase and people recognizing the central location between Los Angeles and San Francisco are all seeking a more relaxed location to settle into to enjoy family life or retirement. San Luis Obispo County's largest city is San Luis Obispo, a city with a population that increases significantly during the school season when students at California Polytechnic State University-San Luis Obispo fill the dorm rooms, classrooms and rental units in San Luis Obispo. On a fast track however, is the city of Paso Robles (El Paso de Robles). Its population will continue to increase significantly.  California Population Chart - California Counties - San Luis Obispo County Landmarks   COUNTY/CITY 4/1/2000 1/1/2001 1/1/2002 1/1/2003 1/1/2004 1/1/2005               CALIFORNIA             INCORPORATED TOTAL 27,536,281 28,127,892 28,711,087 29,253,433 29,803,631 30,270,081 BALANCE OF STATE TOTAL 6,336,805 6,313,669 6,377,584 6,438,009 6,467,460 6,540,277 STATE TOTAL 33,873,086 34,441,561 35,088,671 35,691,442 36,271,091 36,810,358   SAN LUIS OBISPO COUNTY                ARROYO GRANDE        15,851 16,009 16,283 16,478 16,577 16,537 ATASCADERO           26,411 26,708 26,974 27,311 27,683 27,596 EL PASO DE ROBLES    24,297 25,016 25,793 26,782 27,207 27,964 GROVER BEACH         13,067 13,140 13,122 13,055 13,248 13,228 MORRO BAY            10,350 10,420 10,503 10,490 10,519 10,511 PISMO BEACH 8,551 8,582 8,666 8,687 8,716 8,644 SAN LUIS OBISPO      44,179 44,314 44,399 44,245 44,163 44,519 SHELL BEACH *             BALANCE OF COUNTY 103,975 105,956 107,619 108,506 110,014 111,728 INCORPORATED 142,706 144,189 145,740 147,048 148,113 148,999 COUNTY TOTAL 246,681 250,145 253,359 255,554 258,127 260,727