Which county has the lowest median year built?

San Francisco County, California ranks #1 with 1939 (1990 Decennial Census).

What are the top 5 counties by median year built?

San Francisco County, California, Taylor County, Iowa, Suffolk County, Massachusetts, Houghton County, Michigan, Keweenaw County, Michigan.

How many counties are in this ranking?

3,122 counties qualify after filtering for population minimums and data availability. The ranking covers 1990 Decennial Census data.

How is median year built measured?

Median year that housing structures were built. Source: US Census Bureau, 1990 Decennial Census.

RANKING · 1990 CENSUS · 500 SHOWN OF 3,122

Oldest housing stock, US counties · 1990

US counties ranked by oldest median year of construction (1990 ACS).

Flip the list · Newest housing stock, US counties →

All statesAll rankings

SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS –

501Red Lake County, MNMN3,9401954–

502Wibaux County, MTMT8851954–

503Gage County, NENE21,7111954–

504Holt County, NENE10,0671954–

505Kearney County, NENE6,7901954–

506White Pine County, NVNV8,6611954–

507Bergen County, NJNJ977,0261954–

508Chenango County, NYNY45,7151954–

509Jefferson County, NYNY111,5401954–

510Madison County, NYNY67,1201954–

511Schuyler County, NYNY16,9241954–

512Barnes County, NDND10,5731954–

513Hettinger County, NDND2,4921954–

514Columbiana County, OHOH99,3771954–

515Crawford County, OHOH41,8961954–

516Henry County, OHOH27,5981954–

517Marion County, OHOH65,1151954–

518Cimarron County, OKOK2,0591954–

519Tillman County, OKOK6,7801954–

520Baker County, OROR16,6581954–

521Columbia County, PAPA66,1931954–

522Elk County, PAPA29,9261954–

523Erie County, PAPA265,8321954–

524Mercer County, PAPA107,8601954–

525Mifflin County, PAPA46,1271954–

526Sullivan County, PAPA5,8561954–

527Warren County, PAPA37,0381954–

528Marshall County, SDSD4,4261954–

529Perkins County, SDSD2,8531954–

530Childress County, TXTX6,6431954–

531Cottle County, TXTX1,2241954–

532Hall County, TXTX2,7371954–

533Runnels County, TXTX9,6931954–

534Shackelford County, TXTX3,1971954–

535Wahkiakum County, WAWA4,8731954–

536Tipton County, ININ15,3191954–

537Kiowa County, COCO1,4121954–

538Logan County, COCO20,6541954–

539Macoupin County, ILIL43,7481954–

540Vermilion County, ILIL71,2591954–

541Whiteside County, ILIL54,1211954–

542Henry County, ININ49,1371954–

543Bremer County, IAIA25,2961954–

544Clay County, IAIA16,2021954–

545Davis County, IAIA9,2301954–

546Jackson County, IAIA19,2881954–

547Sioux County, IAIA36,7741954–

548Gray County, KSKS5,6521954–

549Cherry County, NENE5,5611954–

550Wayne County, NYNY91,2501954–

551Cooper County, MOMO17,1361955–

552Robertson County, KYKY2,3251955–

553Calhoun County, MIMI133,4081955–

554Dickinson County, MIMI25,8271955–

555Barton County, MOMO11,7951955–

556Meagher County, MTMT2,1371955–

557Saunders County, NENE23,7021955–

558Mora County, NMNM4,0511955–

559Darke County, OHOH51,5201955–

560Harrison County, OHOH14,0701955–

561Lucas County, OHOH423,3471955–

562Mahoning County, OHOH224,7061955–

563Tuscarawas County, OHOH92,3731955–

564Brule County, SDSD5,2781955–

565Baylor County, TXTX3,4721955–

566Haskell County, TXTX5,4991955–

567Marshall County, WVWV29,1591955–

568Crawford County, ILIL18,6481955–

569Pepin County, WIWI7,5131955–

570DeKalb County, ININ44,5351955–

571St. Joseph County, ININ272,8611955–

572McIntosh County, NDND2,4511955–

573Pottawattamie County, IAIA92,9961955–

574Northampton County, PAPA324,4111955–

575Lincoln County, COCO5,6451955–

576Logan County, ILIL27,1821955–

577Moultrie County, ILIL14,3711955–

578Fayette County, ININ23,5331955–

579Fulton County, ININ20,0911955–

580Union County, ININ6,8631955–

581Vanderburgh County, ININ181,9951955–

582Winnebago County, IAIA10,2511955–

583Gove County, KSKS2,6311955–

584Logan County, KSKS2,6611955–

585Reno County, KSKS61,5391955–

586Mason County, KYKY16,9361955–

587Toole County, MTMT5,2111955–

588Treasure County, MTMT7281955–

589Coleman County, TXTX7,9151955–

590Iron County, WIWI6,1271955–

591Jefferson County, WIWI86,5051955–

592Trempealeau County, WIWI31,1711955–

593Bay County, MIMI102,1231956–

594Gratiot County, MIMI41,1901956–

595Menominee County, MIMI22,9411956–

596Ontonagon County, MIMI5,8231956–

597Stevens County, MNMN9,7471956–

598Knox County, MOMO3,7281956–

599Marion County, MOMO28,5251956–

600Chouteau County, MTMT5,8651956–

601Fallon County, MTMT2,9591956–

602Petroleum County, MTMT5481956–

603Pondera County, MTMT6,0721956–

604Sheridan County, MTMT3,4361956–

605Dodge County, NENE38,0571956–

606Harlan County, NENE3,0001956–

607Thomas County, NENE6391956–

608Columbia County, NYNY60,1681956–

609Livingston County, NYNY61,4381956–

610Onondaga County, NYNY466,5841956–

611Adams County, NDND2,2751956–

612Ashland County, OHOH52,5231956–

613Champaign County, OHOH38,8201956–

614Clark County, OHOH135,3401956–

615Coshocton County, OHOH37,1881956–

616Scioto County, OHOH71,3651956–

617Harper County, OKOK3,1721956–

618Kay County, OKOK43,4901956–

619Bradford County, PAPA59,6001956–

620Crawford County, PAPA81,7921956–

621Somerset County, PAPA72,0041956–

622Newport County, RIRI83,0511956–

623Walworth County, SDSD5,2171956–

624Gray County, TXTX20,9191956–

625Arlington County, VAVA243,9311956–

626Walla Walla County, WAWA62,3611956–

627Brooke County, WVWV21,1421956–

628Cabell County, WVWV91,1831956–

629Price County, WIWI13,9881956–

630Grundy County, MOMO9,7441956–

631Liberty County, MTMT1,9571956–

632Racine County, WIWI198,9191956–

633Summit County, OHOH538,3761956–

634Hamilton County, OHOH838,4181956–

635Rock Island County, ILIL141,8691956–

636Yuma County, COCO9,8961956–

637Lincoln County, IDID5,6031956–

638Clark County, ILIL15,1141956–

639Hamilton County, ILIL7,8591956–

640Peoria County, ILIL178,5531956–

641Clay County, ININ26,4101956–

642LaPorte County, ININ111,2941956–

643Montgomery County, ININ38,9541956–

644Newton County, ININ14,1881956–

645Pulaski County, ININ12,4631956–

646Shelby County, ININ45,8821956–

647Warren County, ININ8,4741956–

648Delaware County, IAIA17,6741956–

649Dubuque County, IAIA99,3811956–

650Jasper County, IAIA38,1531956–

651Muscatine County, IAIA41,8531956–

652Barton County, KSKS24,7901956–

653Hamilton County, KSKS2,5001956–

654McPherson County, KSKS30,0641956–

655Sherman County, KSKS5,7631956–

656Sweet Grass County, MTMT3,7621956–

657Lebanon County, PAPA146,3801956–

658Wheeler County, TXTX4,7731956–

659Roanoke, VAVA99,1111956–

660Fond du Lac County, WIWI104,6691956–

661Grant County, WIWI52,4461956–

662Chariton County, MOMO7,3771957–

663Cavalier County, NDND3,4971957–

664Foster County, NDND3,2121957–

665Saline County, KSKS53,3771957–

666Aroostook County, MEME66,6091957–

667Delta County, MIMI36,5821957–

668Muskegon County, MIMI177,9011957–

669Waseca County, MNMN18,6881957–

670Caldwell County, MOMO9,0121957–

671Custer County, MTMT12,0341957–

672Dawson County, MTMT8,6921957–

673Scotts Bluff County, NENE35,5861957–

674Seward County, NENE18,0321957–

675Stanton County, NENE5,7441957–

676Thurston County, NENE6,7521957–

677Mercer County, NJNJ399,2891957–

678Delaware County, NYNY44,3051957–

679Hamilton County, NYNY5,0061957–

680Monroe County, NYNY750,5061957–

681Schoharie County, NYNY30,1761957–

682Pierce County, NDND3,8381957–

683Wells County, NDND3,7291957–

684Allen County, OHOH100,8811957–

685Auglaize County, OHOH45,9091957–

686Erie County, OHOH73,2961957–

687Huron County, OHOH58,2501957–

688Knox County, OHOH64,0021957–

689Miami County, OHOH112,6341957–

690Stark County, OHOH373,7711957–

691Williams County, OHOH36,5491957–

692Kiowa County, OKOK8,1811957–

693Clarion County, PAPA36,6801957–

694Brown County, SDSD37,5611957–

695Briscoe County, TXTX1,4741957–

696Garza County, TXTX4,5101957–

697Hamilton County, TXTX8,6801957–

698Lamb County, TXTX12,5791957–

699Potter County, TXTX114,4531957–

700Refugio County, TXTX6,6571957–

701Terrell County, TXTX7021957–

702Throckmorton County, TXTX1,5541957–

703Danville, VAVA41,6471957–

704Hancock County, WVWV27,7291957–

705Columbia County, WIWI58,1321957–

706Langlade County, WIWI19,5341957–

707Wilbarger County, TXTX12,4811957–

708Doddridge County, WVWV7,6341957–

709Knox County, TXTX3,1921957–

710Fayette County, WVWV38,1651957–

711Concho County, TXTX3,6071957–

712Salem County, NJNJ66,2801957–

713Calhoun County, ILIL4,3001957–

714Denver County, COCO740,6131957–

715Phillips County, COCO4,4201957–

716Douglas County, ILIL19,8801957–

717Fayette County, ILIL20,7901957–

718Macon County, ILIL99,3001957–

719Mason County, ILIL12,4111957–

720Ogle County, ILIL51,3991957–

721Wabash County, ILIL10,9071957–

722Washington County, ILIL13,5641957–

723White County, ILIL13,2501957–

724Daviess County, ININ34,2091957–

725Delaware County, ININ113,1061957–

726Grant County, ININ66,5241957–

727Lake County, ININ504,6121957–

728Madison County, ININ135,0881957–

729Black Hawk County, IAIA131,5321957–

730Buchanan County, IAIA20,8831957–

731Henry County, IAIA19,3491957–

732Franklin County, KSKS26,2991957–

733Harvey County, KSKS33,5801957–

734Jackson County, KSKS13,4381957–

735Sheridan County, KSKS2,4271957–

736Wyandotte County, KSKS170,5971957–

737McPherson County, NENE3691957–

738Ulster County, NYNY183,3301957–

739Greer County, OKOK5,3731957–

740Lehigh County, PAPA384,3831957–

741Westmoreland County, PAPA349,3241957–

742Floyd County, TXTX4,8811957–

743Buena Vista, VAVA6,6721957–

744Green County, WIWI37,2271957–

745Green Lake County, WIWI19,3051957–

746Rock County, WIWI166,4721958–

747Bracken County, KYKY8,5111958–

748Cumberland County, MEME317,2221958–

749Hampshire County, MAMA164,0651958–

750Berrien County, MIMI152,4441958–

751Ionia County, MIMI66,5571958–

752Jackson County, MIMI159,5521958–

753Sanilac County, MIMI40,0831958–

754Schoolcraft County, MIMI8,1871958–

755Shiawassee County, MIMI67,6811958–

756Houston County, MNMN18,4001958–

757Lake County, MNMN10,7461958–

758Ramsey County, MNMN541,6231958–

759Steele County, MNMN37,4641958–

760Livingston County, MOMO14,7081958–

761Pettis County, MOMO44,2541958–

762Schuyler County, MOMO4,1401958–

763Carter County, MTMT1,3831958–

764McCone County, MTMT1,7201958–

765Powell County, MTMT7,1571958–

766Dawson County, NENE24,4521958–

767Warren County, NJNJ112,9531958–

768Lewis County, NYNY26,4791958–

769Towner County, NDND2,0401958–

770Walsh County, NDND10,1791958–

771Clinton County, OHOH42,3011958–

772Fayette County, OHOH28,5521958–

773Hancock County, OHOH75,0341958–

774Monroe County, OHOH12,9941958–

775Muskingum County, OHOH87,0141958–

776Preble County, OHOH40,6641958–

777Richland County, OHOH124,8931958–

778Trumbull County, OHOH198,9721958–

779Fall River County, SDSD7,4671958–

780Kenedy County, TXTX3191958–

781Nolan County, TXTX14,1171958–

782Upton County, TXTX3,1311958–

783Washington County, VTVT59,6521958–

784Northampton County, VAVA11,8791958–

785Kanawha County, WVWV172,3811958–

786Tyler County, WVWV7,8811958–

787Kenosha County, WIWI168,4481958–

788Coles County, ILIL46,6071958–

789Logan County, OHOH46,3021958–

790Sullivan County, MOMO5,7381958–

791Box Butte County, NENE10,4941958–

792Saline County, ILIL22,7721958–

793Dauphin County, PAPA293,3511958–

794Portsmouth, VAVA96,7771958–

795Camas County, IDID1,3161958–

796Lewis County, IDID3,7041958–

797Edwards County, ILIL5,8981958–

798Madison County, ILIL263,1101958–

799Piatt County, ILIL16,7911958–

800Shelby County, ILIL20,5761958–

801Adams County, ININ36,6501958–

802Marshall County, ININ46,5991958–

803Pike County, ININ12,0031958–

804Wells County, ININ28,8831958–

805Appanoose County, IAIA12,0771958–

806Stevens County, KSKS4,9841958–

807Dawson County, TXTX11,7761958–

808Norfolk, VAVA231,0131958–

809Staunton, VAVA26,8011958–

810Dade County, MOMO7,8041959–

811Clarke County, IAIA9,5741959–

812Washington County, MDMD157,7311959–

813Baraga County, MIMI8,1691959–

814Hillsdale County, MIMI45,7381959–

815Huron County, MIMI30,5301959–

816St. Joseph County, MIMI60,9681959–

817Blue Earth County, MNMN70,6341959–

818Dodge County, MNMN21,3761959–

819Goodhue County, MNMN48,1951959–

820Le Sueur County, MNMN29,4531959–

821Polk County, MNMN30,5451959–

822Howard County, MOMO10,1801959–

823Nodaway County, MOMO20,1741959–

824Hill County, MTMT16,1671959–

825Musselshell County, MTMT5,5821959–

826Park County, MTMT18,2141959–

827Phillips County, MTMT4,2031959–

828York County, NENE14,5641959–

829Camden County, NJNJ535,7991959–

830Cumberland County, NJNJ157,1481959–

831Fulton County, OHOH41,8531959–

832Perry County, OHOH35,9181959–

833Ross County, OHOH76,4291959–

834Wheeler County, OROR1,4721959–

835Clinton County, PAPA37,8701959–

836Potter County, PAPA15,8971959–

837Haakon County, SDSD1,8021959–

838Union County, SDSD17,4021959–

839Fisher County, TXTX3,6921959–

840Charlottesville, VAVA44,3881959–

841Sauk County, WIWI66,6521959–

842Shawano County, WIWI41,5601959–

843Hutchinson County, TXTX19,6331959–

844Scurry County, TXTX16,1621959–

845Washakie County, WYWY7,5971959–

846Taylor County, WVWV16,2871959–

847Bristol, VAVA16,4181959–

848Morgan County, COCO30,3061959–

849Pueblo County, COCO169,2771959–

850Butte County, IDID2,7831959–

851Bond County, ILIL16,9591959–

852Hardin County, ILIL3,5881959–

853Kankakee County, ILIL105,5251959–

854Noble County, ININ47,9371959–

855Whitley County, ININ35,0461959–

856Dallas County, IAIA118,4571959–

857Mills County, IAIA14,7931959–

858Greeley County, KSKS1,1821959–

859Scott County, KSKS4,8151959–

860Lincoln County, MEME36,5951959–

861Dorchester County, MDMD33,6281959–

862Juniata County, PAPA23,4031959–

863Montgomery County, PAPA877,6431959–

864Howard County, TXTX30,5041959–

865Martinsville, VAVA13,8491959–

866Winchester, VAVA28,2721959–

867Clark County, MOMO6,4751960–

868Dickey County, NDND4,8951960–

869Grant County, NDND2,2061960–

870Alameda County, CACA1,636,6301960–

871Colusa County, CACA21,8361960–

872Los Angeles County, CACA9,694,9341960–

873Branch County, MIMI45,9931960–

874Cass County, MIMI51,6771960–

875Marquette County, MIMI68,0641960–

876Mason County, MIMI29,0401960–

877Monroe County, MIMI156,0041960–

878Saginaw County, MIMI187,6881960–

879St. Clair County, MIMI160,4861960–

880Carlton County, MNMN36,7111960–

881Wabasha County, MNMN21,5371960–

882Bates County, MOMO16,5121960–

883Daviess County, MOMO8,5581960–

884Jackson County, MOMO732,9941960–

885Jasper County, MOMO127,4281960–

886Lewis County, MOMO9,8791960–

887Saline County, MOMO23,2651960–

888Cascade County, MTMT85,0291960–

889Granite County, MTMT3,6581960–

890Hamilton County, NENE9,6781960–

891Colfax County, NMNM12,1841960–

892Guadalupe County, NMNM4,3431960–

893Clinton County, NYNY78,1381960–

894Greene County, NYNY47,2381960–

895Ontario County, NYNY113,1301960–

896Pembina County, NDND6,5681960–

897Richland County, NDND16,7311960–

898Defiance County, OHOH38,2921960–

899Jackson County, OHOH32,8171960–

900Lorain County, OHOH323,2191960–

901Mercer County, OHOH42,7371960–

902Montgomery County, OHOH539,5981960–

903Noble County, OHOH14,2761960–

904Putnam County, OHOH34,3801960–

905Cotton County, OKOK5,4321960–

906Hughes County, OKOK13,4551960–

907Jefferson County, OKOK5,4311960–

908Bedford County, PAPA47,4801960–

909Huntingdon County, PAPA43,0011960–

910Montour County, PAPA17,8681960–

911Kent County, RIRI173,4951960–

912Lincoln County, SDSD77,1451960–

913Potter County, SDSD2,3771960–

914Sully County, SDSD1,4791960–

915Dallam County, TXTX7,5081960–

916Jones County, TXTX20,8611960–

917Kent County, TXTX6741960–

918Lynn County, TXTX6,0171960–

919Swisher County, TXTX6,7031960–

920Rutland County, VTVT59,6531960–

921Highland County, VAVA2,3181960–

922Nottoway County, VAVA15,7961960–

923Emporia, VAVA5,4471960–

924Chippewa County, WIWI67,6141960–

925Marathon County, WIWI139,4321960–

926Winnebago County, WIWI174,2181960–

927Big Horn County, WYWY12,0241960–

928Donley County, TXTX3,2131960–

929Eastland County, TXTX18,1431960–

930Poweshiek County, IAIA18,3681960–

931Crosby County, TXTX4,8521960–

932San Mateo County, CACA743,5681960–

933Falls Church, VAVA15,1591960–

934St. Clair County, ILIL250,7081960–

935Baca County, COCO3,3471960–

936Prowers County, COCO11,8841960–

937Rio Grande County, COCO11,0871960–

938Clark County, IDID7831960–

939Clay County, ILIL12,7931960–

940McDonough County, ILIL25,9161960–

941Massac County, ILIL13,5021960–

942Menard County, ILIL11,8631960–

943Morgan County, ILIL32,5151960–

944Richland County, ILIL15,2191960–

945Wayne County, ILIL15,8821960–

946Winnebago County, ILIL283,6741960–

947Woodford County, ILIL38,1111960–

948Gibson County, ININ33,0911960–

949Starke County, ININ23,4251960–

950Sedgwick County, KSKS538,4331960–

951Thomas County, KSKS7,7251960–

952Jefferson County, KYKY795,2221960–

953Kenton County, KYKY175,7791960–

954Oxford County, MEME60,3461960–

955Washington County, MEME31,3341960–

956Kent County, MDMD19,5651960–

957Tompkins County, NYNY104,0471960–

958Warren County, NYNY65,0201960–

959Tioga County, PAPA40,5021960–

960Carbon County, UTUT20,6801960–

961Lynchburg, VAVA81,3471960–

962Manassas Park, VAVA16,5601960–

963Waynesboro, VAVA23,9511960–

964Spokane County, WAWA558,3441960–

965Jackson County, WIWI20,9991960–

966Walworth County, WIWI106,1271960–

967Etowah County, ALAL103,8861961–

968Boyd County, KYKY47,7511961–

969Humboldt County, CACA131,6471961–

970Caldwell County, KYKY12,6091961–

971Plymouth County, MAMA546,8291961–

972Alpena County, MIMI28,8531961–

973Barry County, MIMI63,9911961–

974Genesee County, MIMI401,0931961–

975Luce County, MIMI6,3391961–

976Manistee County, MIMI25,6561961–

977Meeker County, MNMN23,6031961–

978Todd County, MNMN26,0601961–

979Audrain County, MOMO24,5281961–

980Macon County, MOMO15,1901961–

981Lincoln County, NENE33,3031961–

982Wheeler County, NENE7891961–

983Cheshire County, NHNH78,2691961–

984Orange County, NYNY417,6691961–

985Oswego County, NYNY118,5691961–

986Sullivan County, NYNY80,5861961–

987Tioga County, NYNY47,4531961–

988Bottineau County, NDND6,2841961–

989Bowman County, NDND2,7621961–

990Ramsey County, NDND11,5301961–

991Guernsey County, OHOH38,3791961–

992Ottawa County, OHOH39,4811961–

993Jackson County, OKOK24,7641961–

994Noble County, OKOK10,8991961–

995Ottawa County, OKOK30,4381961–

996Wasco County, OROR26,3101961–

997Indiana County, PAPA82,8781961–

998Lancaster County, PAPA563,1591961–

999Butte County, SDSD10,8561961–

1000Clay County, SDSD15,0311961–

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS