{"id":2559,"date":"2023-04-06T05:13:24","date_gmt":"2023-04-06T05:13:24","guid":{"rendered":"https:\/\/townsvillages.com\/us\/?p=2559"},"modified":"2026-08-21T16:17:28","modified_gmt":"2026-08-21T16:17:28","slug":"gem-county","status":"publish","type":"post","link":"https:\/\/townsvillages.com\/us\/gem-county\/","title":{"rendered":"Gem County, Idaho"},"content":{"rendered":"<p>Gem County is a county in Idaho, United States, in the southwestern part of the state along the Payette River. It had a population of 19,123 at the 2020 census and covers 561 square miles (1,450 km2) of land, centred near 44&deg;04&prime;N 116&deg;25&prime;W.<\/p>\n<p>Emmett is the county seat, and its postal code is 83617. The county has one incorporated city, one census-designated place, and several unincorporated communities. Gem County observes Mountain Time and does not use civil townships.<\/p>\n<h2>Towns &amp; Villages in Gem County<\/h2>\n<p>Gem County has one incorporated city (Emmett, the seat and only city), one census-designated place (Letha), and a handful of unincorporated rural communities scattered along the Payette River valley and into the surrounding foothills.<\/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>Emmett<\/td>\n<td>City &middot; seat<\/td>\n<td>7,647<\/td>\n<td>83617<\/td>\n<\/tr>\n<tr>\n<td>Letha<\/td>\n<td>CDP<\/td>\n<td>&mdash;<\/td>\n<td>83617<\/td>\n<\/tr>\n<tr>\n<td>Sweet<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>83670<\/td>\n<\/tr>\n<tr>\n<td>Ola<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Bramwell<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Black Canyon<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Cold House<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Del Monte<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Gross<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Jenness<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Little Rock<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Montour<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Pearl<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<tr>\n<td>Plaza<\/td>\n<td>Unincorp.<\/td>\n<td>&mdash;<\/td>\n<td>&mdash;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Emmett is Gem County&#8217;s only incorporated city and by far its largest place; every other listing on this table is an unincorporated crossroads, ranch community, or rural post-office point along the Payette River or in the surrounding hills.<\/p>\n<h2>ZIP Codes<\/h2>\n<ul>\n<li>83617 &mdash; Emmett (also serves Letha)<\/li>\n<li>83670 &mdash; Sweet<\/li>\n<\/ul>\n<p>The remaining rural communities are too small to carry their own ZIP code and are served by the nearest post office town.<\/p>\n<h2>Geography<\/h2>\n<p>Gem County sits in southwestern Idaho, straddling the Payette River as it flows out of the foothills toward the Snake River plain. The Payette Valley around Emmett is the county&#8217;s main agricultural belt, framed by rolling hills and low mountains to the north and east; the Black Canyon Diversion Dam on the Payette River, built in the early 1920s, still supplies the valley&#8217;s irrigation system.<\/p>\n<p>Gem County borders <a href=\"https:\/\/townsvillages.com\/us\/washington-county-idaho\/\">Washington County<\/a> to the northwest, <a href=\"https:\/\/townsvillages.com\/us\/adams-county-idaho\/\">Adams County<\/a> to the north, <a href=\"https:\/\/townsvillages.com\/us\/valley-county\/\">Valley County<\/a> to the northeast, <a href=\"https:\/\/townsvillages.com\/us\/boise-county\/\">Boise County<\/a> to the east, <a href=\"https:\/\/townsvillages.com\/us\/ada-county\/\">Ada County<\/a> to the south, <a href=\"https:\/\/townsvillages.com\/us\/canyon-county\/\">Canyon County<\/a> to the southwest, and <a href=\"https:\/\/townsvillages.com\/us\/payette-county\/\">Payette County<\/a> to the west.<\/p>\n<h2>Demographics<\/h2>\n<p>Gem County had 19,123 residents at the 2020 census. Emmett, the county seat, is by far the largest community, followed by the census-designated place of Letha and the unincorporated community of Sweet. Median household income in the county runs below the Idaho median of $74,942, reflecting the county&#8217;s rural, agriculture-and-timber economic base. With a land area of 561 square miles, the county&#8217;s overall population density is roughly 34 people per square mile, concentrated heavily in and around Emmett.<\/p>\n<h2>Economy &amp; Local Life<\/h2>\n<p>Agriculture, particularly fruit orchards and hay production in the Payette Valley, has long anchored Gem County&#8217;s economy, alongside timber and outdoor recreation in the surrounding foothills. Emmett was for decades home to a Boise Cascade wood-products plant, a major local employer until it closed in 2001; the local economy has since diversified into small manufacturing, retail, and services centred on Emmett. The county&#8217;s fruit-growing heritage is still marked locally as the &#8220;Gem of Plenty.&#8221;<\/p>\n<h2>History<\/h2>\n<p>Gem County was organized on March 15, 1915, carved out of Canyon and Boise counties, and named for Idaho\u2019s state nickname. The area saw early gold-rush activity in the 1860s, and irrigation development along the Payette River beginning in 1863 turned the valley into productive farmland. Emmett grew from a ferry crossing on the Payette River, originally known as Martinsville before being renamed for early settler Emmett Cahalan.<\/p>\n<h2>Getting There<\/h2>\n<ul>\n<li>Boise &mdash; 27 miles southeast<\/li>\n<li>Caldwell &mdash; 24 miles southwest<\/li>\n<li>Nampa &mdash; 30 miles south<\/li>\n<li>Payette &mdash; 30 miles west<\/li>\n<\/ul>\n<p>Idaho State Highway 16 and State Highway 52 are the county&#8217;s main routes, connecting Emmett south to the Boise metro area and north toward Payette and Adams counties. The nearest commercial airport is Boise Airport (BOI), about 30 miles southeast of Emmett.<\/p>\n<h2>Frequently Asked Questions<\/h2>\n<p><strong>Where is Gem County?<\/strong><br \/>\nGem County is in southwestern Idaho, along the Payette River northwest of Boise.<\/p>\n<p><strong>What is the population of Gem County?<\/strong><br \/>\nGem County had a population of 19,123 at the 2020 census.<\/p>\n<p><strong>How big is Gem County?<\/strong><br \/>\nGem County covers 561 square miles (1,450 km2) of land.<\/p>\n<p><strong>What is the county seat of Gem County?<\/strong><br \/>\nEmmett is the county seat and the county&#8217;s only incorporated city.<\/p>\n<p><strong>How many towns are in Gem County?<\/strong><br \/>\nGem County has one incorporated city (Emmett), one census-designated place (Letha), and about a dozen unincorporated rural communities.<\/p>\n<p><strong>What ZIP codes are in Gem County?<\/strong><br \/>\nThe main ZIP codes are 83617 (Emmett) and 83670 (Sweet).<\/p>\n<p><strong>What industries drive Gem County&#8217;s economy?<\/strong><br \/>\nAgriculture &mdash; especially orchard fruit and hay &mdash; along with timber and services centred on Emmett.<\/p>\n<p>More counties in this state: <a href=\"https:\/\/townsvillages.com\/us\/category\/idaho\/\">Towns and villages in Idaho<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gem County is a county in Idaho, United States, in the southwestern part of the state along the Payette River. It had a population of 19,123 at the 2020 census and covers 561 square miles (1,450 km2) of land, centred near 44&deg;04&prime;N 116&deg;25&prime;W. Emmett is the county seat, and its postal code is 83617. The [&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 Gem County, Idaho","_seopress_titles_desc":"Gem County, Idaho: population, Emmett the county seat, ZIP codes, towns, geography, demographics, economy, history and FAQ for all 19,123 residents.","_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":[19],"tags":[6],"class_list":["post-2559","post","type-post","status-publish","format-standard","category-idaho","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\/2559","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=2559"}],"version-history":[{"count":2,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/2559\/revisions"}],"predecessor-version":[{"id":11118,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/posts\/2559\/revisions\/11118"}],"wp:attachment":[{"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/media?parent=2559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/categories?post=2559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/townsvillages.com\/us\/wp-json\/wp\/v2\/tags?post=2559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}