% in CDPs that are COIs
d. Identifying Additional Unincorporated Communities with Public Documents and Key
Informant Interviews For a number of reasons, the U.S. Census may fail to identify all unincorporated communities that are known to exist. Therefore, we utilized public documents from local government agencies as well as interviews with key informants who live or work in three of these counties.6 Utilizing all the research methods described above for three of the counties, we have identified a total of 219 Communities of Interest for the San Joaquin Valley, and a number of additional ones will likely be added once the public documents and advisors in the five other counties have been utilized.
III. Spatial, Demographic & Housing Characteristics of Communities of Interest
The eight counties that make up the San Joaquin Valley show significant variation in the number of their residents that live in unincorporated areas, the spatial distribution of those areas within the counties themselves, and their demographic and housing characteristics. Because the Census Bureau does not collect data on unincorporated areas other than officially recognized Census Designated Places (CDPs), the demographic and housing data reported in this section only refers to the 83 CDPs identified in the 2000 Census. There is no publicly available data on islands or unincorporated fringe and hinterland areas that were not recognized by the U.S. Census Bureau as of April 1999.
a. The Spatial Distribution of Unincorporated Communities within Counties The number of Communities of Interest identified for each county in the Valley varied considerably, from a high of 64 in Tulare to a low of 4 in Madera. Fresno, Kern, San Joaquin and Stanislaus (the four most populous counties in the region) had the next highest number of Communities of Interest, ranging from 27 to 35. (See Table 4. below).
Hinterland Total COIs
(San Joaquin Valley)
(within an SOI)
(outside an SOI)
Table 4. Total Communities
of Interest by Spatial Geography: Island, Fringe and