For statistical purposes, the United States Census Bureau has defined the community as a census-designated place (CDP).

The 2010 United States Census[3] reported that Del Rio had a population of 1,270.

There were 515 housing units at an average density of 248.1 per square mile (95.8/km2), of which 454 (93.6%) were owner-occupied, and 31 (6.4%) were occupied by renters.

Del Rio has been subject to a number of planning activities, beginning with the 1992 analysis by Stanislaus County regarding the projected growth impacts of this area.

[5] This plan, an integral part of the county General Plan, emphasized a continuation of the low density development of the Del Rio area, with balanced uses based upon the historic residential, agricultural and open space precedent land uses.

The plan included prioritization of high quality residential development and the undergrounding of all utility infrastructure.

In regard to environmental factors the 1992 plan called for extensive protection of riparian zones along the Stanislaus River.

The plan also analyzed air quality impacts of future land development and transportation change; these studies were carried out in a companion document prepared by Earthmetrics, and these analyses were used to size the future roadway system and intersection controls.

[6] In the California State Legislature, Del Rio is in the 5th Senate District, represented by Democrat Jerry McNerney, and the 12th Assembly District, represented by Democrat Damon Connolly.