{"id":7474,"date":"2023-09-01T21:28:59","date_gmt":"2023-09-01T21:28:59","guid":{"rendered":"https:\/\/townsvillages.com\/us\/?p=7474"},"modified":"2026-08-14T22:20:49","modified_gmt":"2026-08-14T22:20:49","slug":"clay-county-south-dakota","status":"publish","type":"post","link":"https:\/\/townsvillages.com\/us\/clay-county-south-dakota\/","title":{"rendered":"Clay County, South Dakota"},"content":{"rendered":"<p>Clay County is a county in South Dakota, United States, along the Missouri River on the state&#8217;s southeastern border with Nebraska. It had a population of 14,967 at the 2020 census and covers 417 square miles (1,081 km2) centred near 42&deg;55&prime;N 96&deg;58&prime;W.<\/p>\n<p>Vermillion is the county seat, and its postal code is 57069. The county has one incorporated city plus a second (Irene) that straddles the county line, one incorporated town, two census-designated places, and several unincorporated communities, spread across twelve townships. Clay County observes Central time.<\/p>\n<h2>Towns &amp; Villages in Clay County<\/h2>\n<p>Clay County has one full incorporated city, part of a second, one incorporated town, and a handful of small unincorporated places. CDP = census-designated place (unincorporated but tracked by the Census Bureau); Unincorp. = unincorporated community with no formal municipal government.<\/p>\n<div class=\"tv-table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Place<\/th>\n<th>Type<\/th>\n<th>Township<\/th>\n<th>Pop.<\/th>\n<th>ZIP<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Vermillion<\/td>\n<td>City &middot; seat<\/td>\n<td>Vermillion<\/td>\n<td>11,695<\/td>\n<td>57069<\/td>\n<\/tr>\n<tr>\n<td>Irene<\/td>\n<td>City<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>57037<\/td>\n<\/tr>\n<tr>\n<td>Wakonda<\/td>\n<td>Town<\/td>\n<td>&mdash;<\/td>\n<td>347<\/td>\n<td>57073<\/td>\n<\/tr>\n<tr>\n<td>Burbank<\/td>\n<td>CDP<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>57010<\/td>\n<\/tr>\n<tr>\n<td>Meckling<\/td>\n<td>CDP<\/td>\n<td>Meckling<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Dalesburg<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Greenfield<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Hub City<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Westreville<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Alsen<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Colfax Corner<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Clay Point<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Bloomingdale<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Lodi<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Irene sits mostly in Turner County, with a small portion crossing into northern Clay County &mdash; both counties list it. Alsen likewise straddles the Clay&ndash;Yankton county line.<\/p>\n<h2>Townships<\/h2>\n<div class=\"tv-table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Township<\/th>\n<th>Pop. (2020)<\/th>\n<th>Main settlements<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Vermillion<\/td>\n<td>&mdash;<\/td>\n<td>Vermillion (city)<\/td>\n<\/tr>\n<tr>\n<td>Meckling<\/td>\n<td>&mdash;<\/td>\n<td>Meckling<\/td>\n<\/tr>\n<tr>\n<td>Spirit Mound<\/td>\n<td>&mdash;<\/td>\n<td>Spirit Mound Historic Prairie (landmark, not a settlement)<\/td>\n<\/tr>\n<tr>\n<td>Bethel<\/td>\n<td>&mdash;<\/td>\n<td>rural farmland<\/td>\n<\/tr>\n<tr>\n<td>Fairview<\/td>\n<td>&mdash;<\/td>\n<td>rural farmland<\/td>\n<\/tr>\n<tr>\n<td>Garfield<\/td>\n<td>&mdash;<\/td>\n<td>rural farmland<\/td>\n<\/tr>\n<tr>\n<td>Glenwood<\/td>\n<td>&mdash;<\/td>\n<td>rural farmland<\/td>\n<\/tr>\n<tr>\n<td>Norway<\/td>\n<td>&mdash;<\/td>\n<td>Dalesburg<\/td>\n<\/tr>\n<tr>\n<td>Pleasant Valley<\/td>\n<td>&mdash;<\/td>\n<td>rural farmland<\/td>\n<\/tr>\n<tr>\n<td>Prairie Center<\/td>\n<td>&mdash;<\/td>\n<td>rural farmland<\/td>\n<\/tr>\n<tr>\n<td>Riverside<\/td>\n<td>&mdash;<\/td>\n<td>Burbank<\/td>\n<\/tr>\n<tr>\n<td>Star<\/td>\n<td>&mdash;<\/td>\n<td>rural farmland<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>ZIP Codes<\/h2>\n<ul>\n<li>57069 &mdash; Vermillion (also serves Meckling and surrounding rural townships)<\/li>\n<li>57037 &mdash; Irene (also serves the county&#8217;s northern edge)<\/li>\n<li>57010 &mdash; Burbank<\/li>\n<li>57073 &mdash; Wakonda<\/li>\n<\/ul>\n<p>Small unincorporated places such as Dalesburg, Greenfield, Hub City and Westreville have no ZIP code of their own and are served by the nearest town&#8217;s post office.<\/p>\n<h2>Geography<\/h2>\n<p>Clay County lies in southeastern South Dakota on the north bank of the Missouri River, which forms the county&#8217;s southern boundary with Nebraska. The terrain is mostly level to gently rolling glacial till plains given over to row-crop farming, rising to the wooded bluff known as Spirit Mound &mdash; a solitary hill on the prairie that Meriwether Lewis and William Clark climbed and described in their expedition journals in 1804. The Vermillion River crosses the county&#8217;s eastern townships before joining the Missouri.<\/p>\n<p>Clay County borders <a href=\"https:\/\/townsvillages.com\/us\/turner-county-south-dakota\/\">Turner County<\/a> to the north, <a href=\"https:\/\/townsvillages.com\/us\/lincoln-county-south-dakota\/\">Lincoln County<\/a> to the northeast, <a href=\"https:\/\/townsvillages.com\/us\/union-county-south-dakota\/\">Union County<\/a> to the east, <a href=\"https:\/\/townsvillages.com\/us\/dixon-county\/\">Dixon County, Nebraska<\/a> to the southeast, <a href=\"https:\/\/townsvillages.com\/us\/cedar-county-nebraska\/\">Cedar County, Nebraska<\/a> to the southwest, and <a href=\"https:\/\/townsvillages.com\/us\/yankton-county\/\">Yankton County<\/a> to the west.<\/p>\n<h2>Demographics<\/h2>\n<p>Clay County had a population of 14,967 at the 2020 census, a density of about 36 people per square mile across its 412 square miles of land. Vermillion, home to the University of South Dakota, is by far the largest community with 11,695 residents; Wakonda is a distant second at 347. The university gives the county an unusually young, transient population compared with most of rural South Dakota, which tends to pull median household income figures below the South Dakota median of $71,810 in years with heavy student enrollment.<\/p>\n<h2>Economy &amp; Local Life<\/h2>\n<p>The University of South Dakota, the state&#8217;s oldest public university, is Vermillion&#8217;s and the county&#8217;s dominant employer, anchoring the local economy alongside Sanford Vermillion medical center. The USD campus includes the National Music Museum, one of the largest collections of historic musical instruments in the country. Outside Vermillion, the county&#8217;s economy is agricultural &mdash; corn and soybeans on the till plains, with river-bottom land along the Missouri given over to pasture and hay.<\/p>\n<h2>History<\/h2>\n<p>Clay County was organized on April 10, 1862, one of the first counties established in Dakota Territory, and named for Henry Clay, the Kentucky senator and U.S. secretary of state. The University of South Dakota was chartered the same year, making Vermillion a college town from the territory&#8217;s earliest days. The county has repeatedly faced Missouri River flooding, including major floods in the 19th century that helped push Vermillion&#8217;s original townsite to higher ground.<\/p>\n<h2>Getting There<\/h2>\n<p>South Dakota Highways 19, 46 and 50 cross the county, and Interstate 29 skirts its eastern edge near Vermillion.<\/p>\n<ul>\n<li>Yankton &mdash; 20 miles west<\/li>\n<li>Sioux City, Iowa &mdash; 30 miles southeast<\/li>\n<li>Elk Point &mdash; 25 miles east<\/li>\n<li>Sioux Falls &mdash; 65 miles northeast<\/li>\n<\/ul>\n<p>The nearest commercial airport is Sioux Gateway Airport in Sioux City, Iowa.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<p><strong>Where is Clay County, South Dakota?<\/strong><br \/>It is in the southeastern corner of the state, on the Missouri River across from Nebraska, between Yankton and Union counties.<\/p>\n<p><strong>What is the population of Clay County?<\/strong><br \/>14,967 people, per the 2020 census.<\/p>\n<p><strong>How big is Clay County?<\/strong><br \/>417 square miles (1,081 km2), 412 of which is land.<\/p>\n<p><strong>What is the county seat of Clay County?<\/strong><br \/>Vermillion is the county seat and home to the University of South Dakota.<\/p>\n<p><strong>How many towns are in Clay County?<\/strong><br \/>One city (Vermillion), part of a second (Irene), one incorporated town (Wakonda), and several smaller unincorporated communities.<\/p>\n<p><strong>What ZIP codes are in Clay County?<\/strong><br \/>57069 (Vermillion), 57037 (Irene), 57010 (Burbank) and 57073 (Wakonda).<\/p>\n<p><strong>Why is it called Clay County?<\/strong><br \/>It is named for Henry Clay, the 19th-century Kentucky senator and U.S. secretary of state &mdash; one of 18 U.S. counties bearing his name.<\/p>\n<p>More counties in this state: <a href=\"https:\/\/townsvillages.com\/us\/category\/south-dakota\/\">Towns and villages in South Dakota<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Clay County is a county in South Dakota, United States, along the Missouri River on the state&#8217;s southeastern border with Nebraska. It had a population of 14,967 at the 2020 census and covers 417 square miles (1,081 km2) centred near 42&deg;55&prime;N 96&deg;58&prime;W. Vermillion is the county seat, and its postal code is 57069. The county [&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 Clay County, South Dakota","_seopress_titles_desc":"Clay County, South Dakota: population, ZIP codes, townships and towns around Vermillion and the University of South Dakota.","_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":[48],"tags":[6],"class_list":["post-7474","post","type-post","status-publish","format-standard","category-south-dakota","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\/7474","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=7474"}],"version-history":[{"count":2,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/7474\/revisions"}],"predecessor-version":[{"id":9870,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/7474\/revisions\/9870"}],"wp:attachment":[{"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/media?parent=7474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/categories?post=7474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/tags?post=7474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}