Populations of Cities in San Luis Obispo County

Based on a January 1, 2004 estimate, the population of San Luis Obispo County is 258,200. The following city populations are also based on January 1, 2004 estimates:

*Arroyo Grande
**16,600
*Atascadero
**27,700
*Grover Beach
**13,250
*Morro Bay
**10,500
*Paso Robles
**27,200
*Pismo Beach
**8,725
*San Luis Obispo
**44,200
*Unincorporated Area
**110,000

In order to find the number of San Luis Obispo County residents per square mile we use the equation: $Residents/mile^2\; =\; Population/A\_\{SLO\; County\}$

Residents/$mile^2$ is 71.404.