Del Rio

History

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. 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.

Geography

According to the United States Census Bureau, the CDP has a total area of , of which, of it is land and of it (2.57%) is water.

Most-observed species

• California/Woodhouse's Scrub-Jay

  Aphelocoma californica (Vigors, 1839) · Aves
  9,183
• House Finch

  Haemorhous mexicanus (P.L.Statius Müller, 1776) · Aves
  7,604
• Mourning Dove

  Zenaida macroura (Linnaeus, 1758) · Aves
  6,897
• European Starling

  Sturnus vulgaris Linnaeus, 1758 · Aves
  6,691
• Black Phoebe

  Sayornis nigricans (Swainson, 1827) · Aves
  6,450
• Northern Mockingbird

  Mimus polyglottos (Linnaeus, 1758) · Aves
  6,251
• Anna's Hummingbird

  Calypte anna (R.Lesson, 1829) · Aves
  5,431
• Lesser Goldfinch

  Spinus psaltria (Say, 1822) · Aves
  5,335

Most recent

• M 2.55 — 2026-08-17
  2 km SE of Concord, CA
• M 2.92 — 2026-07-31
  11 km ESE of Gilroy, CA
• M 2.76 — 2026-07-30
  10 km ESE of Gilroy, CA
• M 2.96 — 2026-07-27
  12 km ESE of Gilroy, CA
• M 2.73 — 2026-07-14
  11 km ESE of Gilroy, CA
• M 2.95 — 2026-07-05
  11 km ESE of Gilroy, CA