{"id":25765,"date":"2023-08-24T15:43:02","date_gmt":"2023-08-24T20:43:02","guid":{"rendered":"https:\/\/uscountycourthouses.org\/?page_id=25765"},"modified":"2026-09-01T15:34:27","modified_gmt":"2026-09-01T20:34:27","slug":"mercer","status":"publish","type":"page","link":"https:\/\/uscountycourthouses.org\/?page_id=25765","title":{"rendered":"Mercer"},"content":{"rendered":"\n<p class=\"has-large-font-size wp-block-paragraph\"><strong>Formed January 22, 1800 (27<sup>th<\/sup> county)<\/strong><\/p>\n\n\n\n<div class=\"is-style-rectangular wp-block-jetpack-tiled-gallery aligncenter is-style-rectangular\"><div class=\"\"><div class=\"tiled-gallery__gallery\"><div class=\"tiled-gallery__row\"><div class=\"tiled-gallery__col\" style=\"flex-basis:100.00000%\"><figure class=\"tiled-gallery__item\"><img decoding=\"async\" srcset=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2026\/09\/Mercer-Mercer.png?strip=info&#038;w=600&#038;ssl=1 600w,https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2026\/09\/Mercer-Mercer.png?strip=info&#038;w=900&#038;ssl=1 900w,https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2026\/09\/Mercer-Mercer.png?strip=info&#038;w=924&#038;ssl=1 924w\" alt=\"\" data-height=\"766\" data-id=\"51871\" data-link=\"https:\/\/uscountycourthouses.org\/?attachment_id=51871\" data-url=\"https:\/\/uscountycourthouses.org\/wp-content\/uploads\/2026\/09\/Mercer-Mercer.png\" data-width=\"924\" src=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2026\/09\/Mercer-Mercer.png?ssl=1\" data-amp-layout=\"responsive\"\/><\/figure><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Mercer County (110,656), Mercer (1,985), Hermitage (16,231)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The 1909 Classical Revival structure is made of red brick.&nbsp; The building is at the intersection of Diamond and Erie streets.&nbsp; Erie Street is United States Highway 19.&nbsp; Charles F. Owsley is the courthouse designer.&nbsp; An Annex supports the courthouse.&nbsp; The courthouse features columns and a tower with a working clock.&nbsp; A canon and veteran memorials are on the grounds.&nbsp; There was an 1866 version earlier in Mercer, the only county seat.&nbsp; The county was created on January 22, 1800 from Allegheny County as the 27<sup>th<\/sup> county.&nbsp; Mercer County and its county seat are named for Doctor Hugh Mercer, from the American Revolutionary War.&nbsp; <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a>Mercer County government consists of a treasurer, a sheriff, an attorney, a coroner, and a clerk (executive).&nbsp; It has 3 Commissioners (legislative.)&nbsp; Seven Common Pleas Court Judges and Three Magistrate Court Judges serve Mercer County <\/a>(judicial.)&nbsp; Mercer County is on the western border with Ohio.&nbsp; Erie, Pennsylvania is north and Pittsburgh, Pennsylvania is southeast of the county.&nbsp; The county center is 6.5 miles Northwest of Mercer nearer Fredonia.&nbsp; The county is surrounded clockwise by Crawford, Venango, Butler, and Lawrence counties and Ohio.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The area of the county is 683 square miles.&nbsp; It is 32 out of 67 in the state.&nbsp; It ranks 30 out of 67 in population in the state.&nbsp; <a>It has a density of 162.0 persons per square mile making it 31 out of 67 in the state.&nbsp; <\/a>Mercer County has 52.8% of its population in its incorporated areas.&nbsp; Interstate Highway 79 travels through the county from north to south from Crawford County to Lawrence County.&nbsp; Interstate Highway 80 goes east to west from Venango County to Ohio.&nbsp; United States Highway 19 parallels Interstate Highway 79 from Crawford to Lawrence counties.&nbsp; United States Highway 62 enters from Venango County, east, and exits to Ohio, west.&nbsp; The county is an overall rectangle with a spike on the southeast corner.&nbsp; The City of Mercer is located in the southern quarter of the county.&nbsp; Hermitage is in the southwest quarter of the county.&nbsp; Mercer is the county seat and Hermitage is the largest city.&nbsp; Mercer is 1.8% of the county population while Hermitage is 14.7% of the county population.&nbsp; This county is in the Youngstown-Warren-Boardman Metropolitan Statistical Area.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"354\" src=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?resize=640%2C354&#038;ssl=1\" alt=\"\" class=\"wp-image-25768\" srcset=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?resize=1024%2C567&amp;ssl=1 1024w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?resize=300%2C166&amp;ssl=1 300w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?resize=768%2C425&amp;ssl=1 768w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?resize=1536%2C851&amp;ssl=1 1536w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?resize=1568%2C868&amp;ssl=1 1568w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?w=2008&amp;ssl=1 2008w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Map-2.png?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Location in State and Municipalities<\/figcaption><\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Clark<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Farrell<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Fredonia<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Greenville<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Grove City<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Hermitage<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Jackson Center<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Jamestown<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Mercer<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">New Lebanon<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Sandy Lake<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Sharon<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Sharpsville<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Sheakleyville<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Stoneboro<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">West Middlesex<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Wheatland<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"593\" src=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2025\/10\/Mercer-Courthouse.png?resize=640%2C593&#038;ssl=1\" alt=\"\" class=\"wp-image-46742\" srcset=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2025\/10\/Mercer-Courthouse.png?w=924&amp;ssl=1 924w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2025\/10\/Mercer-Courthouse.png?resize=300%2C278&amp;ssl=1 300w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2025\/10\/Mercer-Courthouse.png?resize=768%2C711&amp;ssl=1 768w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Jerry Fager<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"425\" src=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Courthouses-2.png?resize=640%2C425&#038;ssl=1\" alt=\"\" class=\"wp-image-25767\" srcset=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Courthouses-2.png?w=1000&amp;ssl=1 1000w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Courthouses-2.png?resize=300%2C199&amp;ssl=1 300w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Courthouses-2.png?resize=768%2C510&amp;ssl=1 768w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Courthouses.co<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"425\" src=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Annex.png?resize=640%2C425&#038;ssl=1\" alt=\"\" class=\"wp-image-25766\" srcset=\"https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Annex.png?w=1000&amp;ssl=1 1000w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Annex.png?resize=300%2C199&amp;ssl=1 300w, https:\/\/i0.wp.com\/uscountycourthouses.org\/wp-content\/uploads\/2023\/08\/Mercer-Annex.png?resize=768%2C510&amp;ssl=1 768w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Annex (Courthouses.co)<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Formed January 22, 1800 (27th county) Mercer County (110,656), Mercer (1,985), Hermitage (16,231) The 1909 Classical Revival structure is made of red brick.&nbsp; The building is at the intersection of Diamond and Erie streets.&nbsp; Erie Street is United States Highway 19.&nbsp; Charles F. Owsley is the courthouse designer.&nbsp; An Annex supports the courthouse.&nbsp; The courthouse &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/uscountycourthouses.org\/?page_id=25765\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Mercer&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":63,"menu_order":43,"comment_status":"closed","ping_status":"closed","template":"","meta":{"nf_dc_page":"","footnotes":""},"folder":[],"class_list":["post-25765","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Formed January 22, 1800 (27th county) Mercer County (110,656), Mercer (1,985), Hermitage (16,231) The 1909 Classical Revival structure is made of red brick. The building is at the intersection of Diamond and Erie streets. Erie Street is United States Highway 19. Charles F. Owsley is the courthouse designer. An Annex supports the courthouse. The courthouse\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/uscountycourthouses.org\/?page_id=25765\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Welcome to U.S. County Courthouses! - Visit county courthouses all across the United States.\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Mercer - Welcome to U.S. County Courthouses!\" \/>\n\t\t<meta property=\"og:description\" content=\"Formed January 22, 1800 (27th county) Mercer County (110,656), Mercer (1,985), Hermitage (16,231) The 1909 Classical Revival structure is made of red brick. The building is at the intersection of Diamond and Erie streets. Erie Street is United States Highway 19. Charles F. 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