{"id":772,"date":"2023-01-19T15:18:24","date_gmt":"2023-01-19T15:18:24","guid":{"rendered":"https:\/\/townsvillages.com\/us\/?p=772"},"modified":"2026-08-07T10:25:02","modified_gmt":"2026-08-07T10:25:02","slug":"solano-county","status":"publish","type":"post","link":"https:\/\/townsvillages.com\/us\/solano-county\/","title":{"rendered":"Solano County, California"},"content":{"rendered":"<p>Solano County is a county in California, United States, about 35 miles northeast of San<br \/>\nFrancisco. It had a population of 453,491 at the 2020 census, an estimated 455,376 by 2025, and<br \/>\ncovers 906 square miles (2,350 km2) centred near 38\u00b016\u2032N 121\u00b056\u2032W.<\/p>\n<p>Fairfield is the county seat; its postal code is 94533. The county holds 7 incorporated cities<br \/>\nand 13 unincorporated communities, and it runs on Pacific Time. Its FIPS code is 06095.<\/p>\n<h2>Towns &amp; Villages in Solano County<\/h2>\n<p>Solano County has 20 named places on record: 7 incorporated cities and 13 unincorporated<br \/>\ncommunities, six of which carry formal census designated place (CDP) status. CDP stands for<br \/>\ncensus designated place; Unincorp. covers crossroads and rural hamlets with no current population<br \/>\ncount of their own.<\/p>\n<div class=\"tv-table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Place<\/th>\n<th>Type<\/th>\n<th>Pop.<\/th>\n<th>ZIP<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Fairfield<\/td>\n<td>City &middot; seat<\/td>\n<td>119,881<\/td>\n<td>94533<\/td>\n<\/tr>\n<tr>\n<td>Vallejo<\/td>\n<td>City<\/td>\n<td>126,090<\/td>\n<td>94590<\/td>\n<\/tr>\n<tr>\n<td>Vacaville<\/td>\n<td>City<\/td>\n<td>102,386<\/td>\n<td>95687<\/td>\n<\/tr>\n<tr>\n<td>Suisun City<\/td>\n<td>City<\/td>\n<td>29,516<\/td>\n<td>94585<\/td>\n<\/tr>\n<tr>\n<td>Benicia<\/td>\n<td>City<\/td>\n<td>27,135<\/td>\n<td>94510<\/td>\n<\/tr>\n<tr>\n<td>Dixon<\/td>\n<td>City<\/td>\n<td>18,988<\/td>\n<td>95620<\/td>\n<\/tr>\n<tr>\n<td>Rio Vista<\/td>\n<td>City<\/td>\n<td>10,005<\/td>\n<td>94571<\/td>\n<\/tr>\n<tr>\n<td>Hartley<\/td>\n<td>CDP<\/td>\n<td>2,430<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Green Valley<\/td>\n<td>CDP<\/td>\n<td>1,654<\/td>\n<td>94534<\/td>\n<\/tr>\n<tr>\n<td>Allendale<\/td>\n<td>CDP<\/td>\n<td>1,651<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Rockville<\/td>\n<td>CDP<\/td>\n<td>347<\/td>\n<td>94534<\/td>\n<\/tr>\n<tr>\n<td>Elmira<\/td>\n<td>CDP<\/td>\n<td>193<\/td>\n<td>95625<\/td>\n<\/tr>\n<tr>\n<td>Cordelia<\/td>\n<td>CDP<\/td>\n<td>124<\/td>\n<td>94534<\/td>\n<\/tr>\n<tr>\n<td>Birds Landing<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>94512<\/td>\n<\/tr>\n<tr>\n<td>Collinsville<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>94585<\/td>\n<\/tr>\n<tr>\n<td>Batavia<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Denverton<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Maine Prairie<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Mankas Corner<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Tremont Township<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Birds Landing&#8217;s post office closed in 2001, so its last documented count is a 2000-census<br \/>\nfigure of 130 residents rather than a current one; the ZIP survives for rural-route mail. Batavia,<br \/>\nDenverton, Maine Prairie, Mankas Corner and Tremont Township are historic rail or stagecoach<br \/>\ncrossroads with no formal census tract of their own and no current population figure on record.<\/p>\n<h2>ZIP Codes<\/h2>\n<ul>\n<li>94533 &mdash; Fairfield (also serves 94534 and the Travis Air Force Base ZIP, 94535)<\/li>\n<li>94590 &mdash; Vallejo (also serves 94589, 94591 and 94592)<\/li>\n<li>95687 &mdash; Vacaville (also serves 95688 and 95696)<\/li>\n<li>94534 &mdash; Green Valley, Rockville and Cordelia, all delivered under the Fairfield-area code<\/li>\n<li>94585 &mdash; Suisun City (also serves Collinsville)<\/li>\n<li>94510 &mdash; Benicia<\/li>\n<li>95620 &mdash; Dixon<\/li>\n<li>94571 &mdash; Rio Vista<\/li>\n<li>95625 &mdash; Elmira<\/li>\n<li>94512 &mdash; Birds Landing<\/li>\n<\/ul>\n<p>Hartley, Allendale, Batavia, Denverton, Maine Prairie, Mankas Corner and Tremont Township have<br \/>\nno ZIP code of their own; mail there is delivered under the nearest incorporated city&#8217;s<br \/>\ncode.<\/p>\n<h2>Geography<\/h2>\n<p>Solano County sits at the northeastern edge of the San Francisco Bay Area, where the Coast<br \/>\nRanges give way to the flat farmland of the Sacramento Valley. Of its 906 square miles, 810 are<br \/>\nland and 96 are water, a water share of roughly 11 percent, high for an inland California county.<br \/>\nSuisun Marsh, the largest contiguous estuarine marsh remaining on the west coast of North America,<br \/>\ncovers much of the county&#8217;s southeast, and the Sacramento River forms part of the boundary<br \/>\nwith Contra Costa County before emptying into Suisun Bay near Collinsville. The Montezuma Hills, a<br \/>\nrolling upland in the southeast corner, host one of California&#8217;s oldest wind-energy resource<br \/>\nareas.<\/p>\n<p>Napa County lies to the west, Yolo County to the north, Sacramento County to the northeast, and<br \/>\nContra Costa County to the south across the Carquinez Strait; Sonoma County touches the<br \/>\ncounty&#8217;s northwest corner for a short stretch. <a\nhref=\"https:\/\/townsvillages.com\/us\/napa-county\/\">Napa County<\/a>, <a\nhref=\"https:\/\/townsvillages.com\/us\/yolo-county\/\">Yolo County<\/a>, <a\nhref=\"https:\/\/townsvillages.com\/us\/sacramento-county\/\">Sacramento County<\/a>, <a\nhref=\"https:\/\/townsvillages.com\/us\/contra-costa-county\/\">Contra Costa County<\/a> and <a\nhref=\"https:\/\/townsvillages.com\/us\/sonoma-county\/\">Sonoma County<\/a> all border Solano.<\/p>\n<h2>Demographics<\/h2>\n<p>Solano County had a population of 453,491 at the 2020 census, and the latest estimate puts the<br \/>\ncounty near 455,376 residents. Vallejo and Fairfield are the two largest communities, together<br \/>\nholding well over half the county&#8217;s population. Median household income runs $100,401,<br \/>\nhigher than California&#8217;s statewide figure of $95,521. Population density works out to<br \/>\nroughly 560 people per square mile of land, moderate for a Bay Area county and concentrated<br \/>\nheavily in the I-80 corridor cities.<\/p>\n<h2>Economy &amp; Local Life<\/h2>\n<p>Health care and social assistance employs the most workers in the county, about 32,877 people,<br \/>\nfollowed by retail trade at 23,689 and manufacturing at 17,769. Travis Air Force Base, three miles<br \/>\neast of downtown Fairfield, is the county&#8217;s single largest employer with more than 13,000<br \/>\nactive-duty, reserve and civilian personnel. Vacaville hosts a cluster of biotechnology and<br \/>\npharmaceutical plants, including facilities run by Lonza and Kaiser Permanente, on the site once<br \/>\noccupied by Genentech&#8217;s original manufacturing campus. Benicia is home to the Valero Benicia<br \/>\nRefinery, one of the largest oil refineries on the West Coast, and Fairfield manufactures Jelly<br \/>\nBelly jelly beans at a factory that also runs public tours. The Suisun Valley American<br \/>\nViticulture Area, around Mankas Corner, grows wine grapes and olives on land once used for wheat<br \/>\nand quicksilver ore transport. The county&#8217;s biggest annual event is the Solano County Fair,<br \/>\nheld each June at the Fairgrounds in Vallejo.<\/p>\n<h2>History<\/h2>\n<p>The California legislature created Solano County on 18 February 1850, one of the state&#8217;s<br \/>\noriginal 27 counties. It was named for Chief Solano, a Suisun leader baptized Francisco Solano who<br \/>\nallied with General Mariano Vallejo in the 1830s. The county seat moved twice before settling<br \/>\npermanently: Benicia held the title first, then Vallejo, before Fairfield became the seat in<br \/>\n1858.<\/p>\n<p>Vallejo briefly served as California&#8217;s state capital from 1852 to 1853, and Benicia held<br \/>\nthe capital from 1853 to 1854, before the government moved on to Sacramento for good. The restored<br \/>\nBenicia capitol building, built in 1852, is the only surviving structure from any of<br \/>\nCalifornia&#8217;s pre-Sacramento capitals and is now a state historic park.<\/p>\n<h2>Getting There<\/h2>\n<p>Interstate 80 crosses the county through Vallejo, Fairfield and Vacaville, linking the region to<br \/>\nSan Francisco and Sacramento. Interstate 680 runs south from Benicia across the Carquinez Strait,<br \/>\nand Interstate 505 clips the county&#8217;s northwest corner near Allendale. California state<br \/>\nroutes 12, 29, 37 and 113 also cross the county.<\/p>\n<ul>\n<li>San Francisco &mdash; about 35 miles southwest<\/li>\n<li>Sacramento &mdash; about 45 miles northeast<\/li>\n<li>Oakland &mdash; about 30 miles south<\/li>\n<li>Napa &mdash; about 15 miles west<\/li>\n<\/ul>\n<p>Sacramento International Airport and San Francisco International Airport are both roughly 40<br \/>\nmiles from Fairfield and share most of the county&#8217;s commercial air traffic. Nut Tree Airport<br \/>\nin Vacaville handles general aviation. Amtrak&#8217;s Capitol Corridor trains stop at the<br \/>\nFairfield&#8211;Vacaville Station on Vanden Road, connecting to Sacramento, Oakland and San Jose.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<p><strong>Where is Solano County located?<\/strong><br \/>\nIt sits in the northeastern San Francisco Bay Area, about 35 miles northeast of San Francisco,<br \/>\nbordered by Napa, Yolo, Sacramento, Contra Costa and Sonoma counties.<\/p>\n<p><strong>What is the population of Solano County?<\/strong><br \/>\n453,491 at the 2020 census, with a 2025 estimate near 455,376.<\/p>\n<p><strong>How big is Solano County?<\/strong><br \/>\n906 square miles (2,350 km2), of which 810 square miles are land.<\/p>\n<p><strong>What is the county seat of Solano County?<\/strong><br \/>\nFairfield, the county seat since 1858, following earlier stints for Benicia and Vallejo.<\/p>\n<p><strong>How many towns and cities are in Solano County?<\/strong><br \/>\nSeven incorporated cities &mdash; Fairfield, Vallejo, Vacaville, Suisun City, Benicia, Dixon and<br \/>\nRio Vista &mdash; plus 13 unincorporated communities, including the census-designated places<br \/>\nHartley, Green Valley, Allendale, Rockville, Elmira and Cordelia.<\/p>\n<p><strong>What ZIP codes does Solano County use?<\/strong><br \/>\n94533, 94534 and 94535 for Fairfield and its CDPs; 94589 through 94592 for Vallejo; 95687, 95688<br \/>\nand 95696 for Vacaville; 94585 for Suisun City; 94510 for Benicia; 95620 for Dixon; 94571 for Rio<br \/>\nVista; and 95625 for Elmira.<\/p>\n<p><strong>What is Solano County known for?<\/strong><br \/>\nTravis Air Force Base, the Valero Benicia Refinery, Suisun Marsh, and briefly hosting<br \/>\nCalifornia&#8217;s state capital at both Vallejo and Benicia in the early 1850s.<\/p>\n<p>More counties in this state: <a href=\"https:\/\/townsvillages.com\/us\/category\/california\/\">Towns and villages in California<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Solano County is a county in California, United States, about 35 miles northeast of San Francisco. It had a population of 453,491 at the 2020 census, an estimated 455,376 by 2025, and covers 906 square miles (2,350 km2) centred near 38\u00b016\u2032N 121\u00b056\u2032W. Fairfield is the county seat; its postal code is 94533. The county holds [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Towns & Villages in Solano County, California","_seopress_titles_desc":"All 7 cities and 13 unincorporated places in Solano County, California - type, population and ZIP, plus Fairfield history and Travis AFB economy.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[11],"tags":[6],"class_list":["post-772","post","type-post","status-publish","format-standard","category-california","tag-towns-and-cities","entry"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/772","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/comments?post=772"}],"version-history":[{"count":5,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/772\/revisions"}],"predecessor-version":[{"id":9225,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/772\/revisions\/9225"}],"wp:attachment":[{"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/media?parent=772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/categories?post=772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/tags?post=772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}