{"id":2808,"date":"2023-04-17T12:42:00","date_gmt":"2023-04-17T12:42:00","guid":{"rendered":"https:\/\/townsvillages.com\/us\/?p=2808"},"modified":"2026-08-16T19:08:27","modified_gmt":"2026-08-16T19:08:27","slug":"marion-county-illinois","status":"publish","type":"post","link":"https:\/\/townsvillages.com\/us\/marion-county-illinois\/","title":{"rendered":"Marion County, Illinois"},"content":{"rendered":"<p>Marion County is a county in Illinois, United States, centred on the twin rail towns of Salem and Centralia in the south-central part of the state. It had a population of 37,729 at the 2020 census and covers 572 square miles (1,480 km2) of land centred near 38\u00b039\u2032N 88\u00b055\u2032W.<\/p>\n<p>Salem is the county seat, and its postal code is 62881. The county holds four incorporated cities, ten villages, and a scatter of unincorporated hamlets spread across 17 townships. Marion County runs on Central time and carries FIPS code 17121.<\/p>\n<h2>Towns &amp; Villages in Marion County<\/h2>\n<p>Marion County has 25 named places on record: four cities, ten villages, and eleven smaller unincorporated communities. Centralia is the largest city and straddles the Marion&ndash;Clinton county line; Salem, the county seat, sits at the junction of Interstates 57 and 64. Township assignment and current population figures are not available for every small unincorporated place, marked &mdash; below rather than guessed.<\/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>Salem<\/td>\n<td>City &middot; seat<\/td>\n<td>Salem<\/td>\n<td>&mdash;<\/td>\n<td>62881<\/td>\n<\/tr>\n<tr>\n<td>Centralia<\/td>\n<td>City<\/td>\n<td>Centralia<\/td>\n<td>&mdash;<\/td>\n<td>62801<\/td>\n<\/tr>\n<tr>\n<td>Kinmundy<\/td>\n<td>City<\/td>\n<td>Kinmundy<\/td>\n<td>&mdash;<\/td>\n<td>62854<\/td>\n<\/tr>\n<tr>\n<td>Wamac<\/td>\n<td>City<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Alma<\/td>\n<td>Village<\/td>\n<td>Alma<\/td>\n<td>&mdash;<\/td>\n<td>62807<\/td>\n<\/tr>\n<tr>\n<td>Central City<\/td>\n<td>Village<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Iuka<\/td>\n<td>Village<\/td>\n<td>Iuka<\/td>\n<td>&mdash;<\/td>\n<td>62849<\/td>\n<\/tr>\n<tr>\n<td>Junction City<\/td>\n<td>Village<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Kell<\/td>\n<td>Village<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>62853<\/td>\n<\/tr>\n<tr>\n<td>Odin<\/td>\n<td>Village<\/td>\n<td>Odin<\/td>\n<td>&mdash;<\/td>\n<td>62870<\/td>\n<\/tr>\n<tr>\n<td>Patoka<\/td>\n<td>Village<\/td>\n<td>Patoka<\/td>\n<td>&mdash;<\/td>\n<td>62875<\/td>\n<\/tr>\n<tr>\n<td>Sandoval<\/td>\n<td>Village<\/td>\n<td>Sandoval<\/td>\n<td>&mdash;<\/td>\n<td>62882<\/td>\n<\/tr>\n<tr>\n<td>Vernon<\/td>\n<td>Village<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>62892<\/td>\n<\/tr>\n<tr>\n<td>Walnut Hill<\/td>\n<td>Village<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>62893<\/td>\n<\/tr>\n<tr>\n<td>Tonti<\/td>\n<td>Unincorp.<\/td>\n<td>Tonti<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Omega<\/td>\n<td>Unincorp.<\/td>\n<td>Omega<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Bannister<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Brubaker<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Cartter<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Fairman<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Foxville<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Helm<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Hickory Hill<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Hubbard Woods<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Lester<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Selmaville<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Union Town<\/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>Centralia is a split city: most of it lies in Marion County, but a slice of its southwest side crosses into Clinton County next door &mdash; both halves share the same city government and ZIP code.<\/p>\n<h2>Townships<\/h2>\n<p>Marion County has 17 civil townships. Confirmed 2020 township-level population counts were not available at the time of writing, so the Pop. column is left blank rather than estimated.<\/p>\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>Salem<\/td>\n<td>&mdash;<\/td>\n<td>Salem, Junction City<\/td>\n<\/tr>\n<tr>\n<td>Centralia<\/td>\n<td>&mdash;<\/td>\n<td>Centralia, Central City, Wamac<\/td>\n<\/tr>\n<tr>\n<td>Kinmundy<\/td>\n<td>&mdash;<\/td>\n<td>Kinmundy<\/td>\n<\/tr>\n<tr>\n<td>Sandoval<\/td>\n<td>&mdash;<\/td>\n<td>Sandoval<\/td>\n<\/tr>\n<tr>\n<td>Alma<\/td>\n<td>&mdash;<\/td>\n<td>Alma<\/td>\n<\/tr>\n<tr>\n<td>Iuka<\/td>\n<td>&mdash;<\/td>\n<td>Iuka<\/td>\n<\/tr>\n<tr>\n<td>Odin<\/td>\n<td>&mdash;<\/td>\n<td>Odin<\/td>\n<\/tr>\n<tr>\n<td>Patoka<\/td>\n<td>&mdash;<\/td>\n<td>Patoka<\/td>\n<\/tr>\n<tr>\n<td>Omega<\/td>\n<td>&mdash;<\/td>\n<td>Omega<\/td>\n<\/tr>\n<tr>\n<td>Tonti<\/td>\n<td>&mdash;<\/td>\n<td>Tonti<\/td>\n<\/tr>\n<tr>\n<td>Carrigan<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Foster<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Haines<\/td>\n<td>&mdash;<\/td>\n<td>Kell<\/td>\n<\/tr>\n<tr>\n<td>Meacham<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Raccoon<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Romine<\/td>\n<td>&mdash;<\/td>\n<td>Vernon<\/td>\n<\/tr>\n<tr>\n<td>Stevenson<\/td>\n<td>&mdash;<\/td>\n<td>Walnut Hill<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>ZIP Codes<\/h2>\n<ul>\n<li>62801 &mdash; Centralia (also serves Central City and Wamac)<\/li>\n<li>62807 &mdash; Alma<\/li>\n<li>62849 &mdash; Iuka<\/li>\n<li>62853 &mdash; Kell<\/li>\n<li>62854 &mdash; Kinmundy<\/li>\n<li>62870 &mdash; Odin<\/li>\n<li>62875 &mdash; Patoka<\/li>\n<li>62881 &mdash; Salem (also serves Junction City)<\/li>\n<li>62882 &mdash; Sandoval<\/li>\n<li>62892 &mdash; Vernon<\/li>\n<li>62893 &mdash; Walnut Hill<\/li>\n<\/ul>\n<p>Tonti and the county&#8217;s smaller unincorporated hamlets rely on the ZIP code of their nearest post-office town rather than one of their own.<\/p>\n<h2>Geography<\/h2>\n<p>Marion County sits on the gently rolling till plains typical of south-central Illinois. Of its 576 square miles, 572 square miles are land and 3.7 square miles (0.6%) are water. The county&#8217;s small streams feed west into the Kaskaskia River watershed. Marion County borders <a href=\"https:\/\/townsvillages.com\/us\/fayette-county-illinois\/\">Fayette County<\/a> to the north, <a href=\"https:\/\/townsvillages.com\/us\/clay-county-illinois\/\">Clay County<\/a> to the east, <a href=\"https:\/\/townsvillages.com\/us\/wayne-county-illinois\/\">Wayne County<\/a> to the southeast, <a href=\"https:\/\/townsvillages.com\/us\/jefferson-county-illinois\/\">Jefferson County<\/a> to the south, <a href=\"https:\/\/townsvillages.com\/us\/washington-county-illinois\/\">Washington County<\/a> to the southwest, and Clinton County to the west.<\/p>\n<h2>Demographics<\/h2>\n<p>Marion County had 37,729 residents at the 2020 census, a density of about 66 people per square mile. Centralia and Salem are by far its two largest communities, together home to more than half the county&#8217;s population. Marion County&#8217;s median household income runs well below the Illinois median of $80,306, reflecting an economy still weighted toward manufacturing, agriculture, and health care rather than the state&#8217;s higher-wage metro sectors.<\/p>\n<h2>Economy &amp; Local Life<\/h2>\n<p>Corn and soybean farming dominates the townships outside Centralia and Salem, while the two cities anchor the county&#8217;s retail, health care, and light-manufacturing base. Centralia grew up as a Illinois Central Railroad division point and later an oil and coal town; both industries left a lasting mark on its downtown and neighborhoods. Salem, a few miles south, is the county seat and home to Salem Township Hospital. Each August, Marion County&#8217;s fair and the Salem-based Marion County Fair draw much of the county together.<\/p>\n<h2>History<\/h2>\n<p>Marion County was organized on January 24, 1823, from parts of Jefferson and Fayette counties. It is named for General Francis Marion, the South Carolina militia leader nicknamed the &#8220;Swamp Fox&#8221; during the American Revolution. On March 25, 1947, an explosion at the Centralia Coal Company&#8217;s No. 5 mine just outside Centralia killed 111 miners, one of the deadliest mining disasters in Illinois history and a catalyst for later federal mine-safety reform.<\/p>\n<h2>Getting There<\/h2>\n<p>Interstate 57 crosses the county north&ndash;south and meets Interstate 64 at Salem; U.S. Routes 50 and 51 also run through the county.<\/p>\n<ul>\n<li>Salem &mdash; 65 miles east of St. Louis, Missouri<\/li>\n<li>Centralia &mdash; 8 miles north of Salem<\/li>\n<li>Mount Vernon &mdash; 20 miles south of Salem<\/li>\n<li>Effingham &mdash; 30 miles northeast of Salem<\/li>\n<\/ul>\n<p>Amtrak&#8217;s City of New Orleans and Illini\/Saluki trains stop at Centralia on the Chicago&ndash;New Orleans corridor. The nearest major commercial airport is St. Louis Lambert International Airport, roughly 70 miles west.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<p><strong>Where is Marion County, Illinois?<\/strong><br \/>It is in south-central Illinois, about 65 miles east of St. Louis, Missouri, along the Interstate 57\/64 corridor.<\/p>\n<p><strong>What is the population of Marion County?<\/strong><br \/>37,729 people at the 2020 census.<\/p>\n<p><strong>How big is Marion County?<\/strong><br \/>572 square miles of land (1,480 km2), plus 3.7 square miles of water.<\/p>\n<p><strong>What is the county seat of Marion County?<\/strong><br \/>Salem is the county seat.<\/p>\n<p><strong>How many towns are in Marion County?<\/strong><br \/>Four cities (Salem, Centralia, Kinmundy, and Wamac), ten villages, and a number of smaller unincorporated communities.<\/p>\n<p><strong>What ZIP codes are in Marion County?<\/strong><br \/>Eleven, led by 62881 (Salem) and 62801 (Centralia); see the ZIP Codes section above for the full list.<\/p>\n<p><strong>What happened at the Centralia mine disaster?<\/strong><br \/>An explosion at the No. 5 mine on March 25, 1947, killed 111 miners and is remembered as one of Illinois&#8217;s worst mining tragedies.<\/p>\n<p>More counties in this state: <a href=\"https:\/\/townsvillages.com\/us\/category\/illinois\/\">Towns and villages in Illinois<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Marion County is a county in Illinois, United States, centred on the twin rail towns of Salem and Centralia in the south-central part of the state. It had a population of 37,729 at the 2020 census and covers 572 square miles (1,480 km2) of land centred near 38\u00b039\u2032N 88\u00b055\u2032W. Salem is the county seat, and [&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 Marion County, Illinois","_seopress_titles_desc":"Marion County, Illinois: population, towns, ZIP codes, townships, and county seat Salem \u2014 pop. 37,729 at the 2020 census.","_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":[20],"tags":[6],"class_list":["post-2808","post","type-post","status-publish","format-standard","category-illinois","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\/2808","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=2808"}],"version-history":[{"count":2,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/2808\/revisions"}],"predecessor-version":[{"id":10273,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/2808\/revisions\/10273"}],"wp:attachment":[{"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/media?parent=2808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/categories?post=2808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/tags?post=2808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}