Rio Vista is located on the east side of Solano County and, because it is not on the interstate-80 corridor, is somewhat isolated from the rest of the county. It is a small waterfront town situated on the west bank of the Sacramento River. Its historic downtown serves as the city’s main retail area. CA-12 bisects the city in an east-west direction, serving as the principal connector to I-80 in Fairfield, to CA-113 leading to Dixon, and to Interstate-5 in Stockton. CA-84 starts in Rio Vista and continues north to Sacramento. Most of Rio Vista is undeveloped, with self-contained pockets of residential development located throughout the city. The largest employer within Rio Vista is Rosetta Resource, a natural gas well operator, though Trilogy and Homecoming, two residential developments, recently created more jobs after establishing a presence in the city. Rio Vista is the smallest city in Solano County, with a population of 9,009 people as of 2017.