RANKING · 2025 ACS 1-YEAR · 347 SHOWN OF 847

Highest share of homes on septic, US counties

US counties ranked by the share of occupied homes that drain to a septic tank instead of a public sewer in 2025. The American Community Survey asked this for the first time in 2025, and its 1-year estimates cover only places with 65,000 or more residents.

All statesAll rankings

SAME RANKING BYCities States Metros

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

RANKPLACESTATEPOPHOMES ON SEPTICVS –

501Lea County, NMNM74,74918.2%–

502Warren County, OHOH257,18118.2%–

503Benton County, WAWA221,72218.2%–

504Washington County, ARAR271,21318.2%–

505Hidalgo County, TXTX921,54918.1%–

506Sonoma County, CACA486,44418.0%–

507Victoria County, TXTX92,65618.0%–

508Jasper County, MOMO127,42817.9%–

509Erie County, PAPA265,83217.8%–

510Anne Arundel County, MDMD603,38017.8%–

511Sarasota County, FLFL479,95817.6%–

512Montgomery County, TNTN249,93517.5%–

513Georgetown County, SCSC65,91217.5%–

514Capitol Planning Region, CTCT994,11517.4%–

515Cabarrus County, NCNC249,72517.4%–

516Washtenaw County, MIMI370,21417.4%–

517Laramie County, WYWY102,93817.4%–

518Jackson County, OROR221,79517.4%–

519McLennan County, TXTX272,02017.3%–

520San Bernardino County, CACA2,224,09117.3%–

521Dubuque County, IAIA99,38117.2%–

522Westmoreland County, PAPA349,32417.2%–

523Tazewell County, ILIL130,04917.2%–

524Clark County, WAWA532,11917.1%–

525Randall County, TXTX152,35117.0%–

526San Patricio County, TXTX72,05317.0%–

527Dougherty County, GAGA82,61617.0%–

528Cambria County, PAPA128,96816.8%–

529Brazoria County, TXTX419,08016.7%–

530Morris County, NJNJ524,25116.7%–

531Williamson County, TNTN272,06116.5%–

532Kent County, MIMI675,23216.4%–

533Allegany County, MDMD66,84816.4%–

534Gloucester County, NJNJ312,63816.3%–

535DeSoto County, MSMS197,91816.2%–

536Bossier Parish, LALA131,86716.2%–

537Blue Earth County, MNMN70,63416.2%–

538Clarke County, GAGA129,92116.2%–

539Beaufort County, SCSC204,43316.2%–

540Cascade County, MTMT85,02916.1%–

541Atlantic County, NJNJ278,65716.1%–

542Pinal County, AZAZ539,38016.1%–

543Cumberland County, PAPA277,27016.0%–

544Pasco County, FLFL674,51616.0%–

545Burleigh County, NDND103,25116.0%–

546Winnebago County, ILIL283,67415.9%–

547Shawnee County, KSKS178,60715.8%–

548Merced County, CACA297,26015.8%–

549Wood County, WVWV82,38515.8%–

550Delaware County, ININ113,10615.7%–

551Chesterfield County, VAVA397,14815.7%–

552Berkeley County, SCSC274,66615.7%–

553St. Johns County, FLFL346,32815.6%–

554Kendall County, ILIL145,47015.6%–

555Peoria County, ILIL178,55315.5%–

556Polk County, OROR90,03715.4%–

557Scott County, MNMN159,01715.4%–

558Sebastian County, ARAR130,64115.4%–

559Luzerne County, PAPA332,12615.3%–

560Spokane County, WAWA558,34415.2%–

561Comanche County, OKOK122,15815.2%–

562Madison County, MSMS116,29815.2%–

563Blair County, PAPA119,54115.1%–

564Tippecanoe County, ININ190,45615.1%–

565Wood County, OHOH134,17615.0%–

566Sheboygan County, WIWI118,04715.0%–

567La Crosse County, WIWI121,33915.0%–

568Tulare County, CACA485,14614.9%–

569St. Lucie County, FLFL402,44914.8%–

570Cleveland County, OKOK303,97314.8%–

571South Central Connecticut Planning Region, CTCT578,74114.8%–

572Niagara County, NYNY208,91214.8%–

573Harrison County, MSMS217,13614.8%–

574Outagamie County, WIWI195,89414.7%–

575Washington County, MNMN286,89514.7%–

576Napa County, CACA132,94914.7%–

577Lorain County, OHOH323,21914.6%–

578Collier County, FLFL417,13114.6%–

579Pottawattamie County, IAIA92,99614.6%–

580Placer County, CACA442,08114.5%–

581Norfolk County, MAMA739,74914.5%–

582Pennington County, SDSD116,79214.5%–

583Essex County, MAMA826,65314.5%–

584Bell County, TXTX402,24814.5%–

585Hampden County, MAMA464,33814.4%–

586Madison County, ILIL263,11014.3%–

587Coryell County, TXTX85,59214.3%–

588James City County, VAVA83,32614.2%–

589Butler County, KSKS69,48413.9%–

590Johnson County, ININ174,26213.9%–

591Clark County, ININ130,45113.8%–

592Canadian County, OKOK187,18913.7%–

593Kern County, CACA927,06813.7%–

594Seminole County, FLFL491,88413.7%–

595Mahoning County, OHOH224,70613.6%–

596Columbia County, GAGA169,18913.6%–

597Onondaga County, NYNY466,58413.5%–

598Macon County, ILIL99,30013.4%–

599Mesa County, COCO162,84513.4%–

600Greene County, OHOH174,32213.3%–

601Middlesex County, MAMA1,669,97913.3%–

602Kanawha County, WVWV172,38113.3%–

603Lehigh County, PAPA384,38313.2%–

604Bucks County, PAPA647,82813.1%–

605Taylor County, TXTX150,07713.1%–

606Oakland County, MIMI1,288,33713.1%–

607Rock Island County, ILIL141,86913.1%–

608Genesee County, MIMI401,09313.1%–

609Wake County, NCNC1,257,23513.1%–

610Iron County, UTUT67,14113.0%–

611Dorchester County, SCSC178,39713.0%–

612Greene County, MOMO309,28612.8%–

613McLean County, ILIL171,41912.7%–

614Lincoln County, SDSD77,14512.6%–

615Gregg County, TXTX126,09512.5%–

616Summit County, OHOH538,37612.5%–

617Howard County, MDMD339,18312.5%–

618Greater Bridgeport Planning Region, CTCT337,69712.5%–

619Lafayette Parish, LALA257,94912.4%–

620Burlington County, NJNJ481,43912.4%–

621Cole County, MOMO77,90812.4%–

622Bibb County, GAGA157,55612.3%–

623Clayton County, GAGA297,47112.3%–

624Ingham County, MIMI289,70912.2%–

625Bannock County, IDID91,59112.2%–

626Orange County, FLFL1,528,00212.1%–

627Ward County, NDND68,23312.1%–

628Duval County, FLFL1,062,96312.1%–

629Providence County, RIRI678,17912.0%–

630Rockwall County, TXTX140,73812.0%–

631DeKalb County, ILIL101,83511.9%–

632Bonneville County, IDID135,77111.9%–

633Clay County, MNMN67,73411.9%–

634Boone County, KYKY145,31611.8%–

635Knox County, TNTN511,45311.8%–

636Johnson County, IAIA160,04411.7%–

637Sangamon County, ILIL194,17011.5%–

638Anchorage, AKAK287,15511.5%–

639Campbell County, KYKY95,44111.4%–

640Olmsted County, MNMN166,73111.4%–

641Richmond County, GAGA206,55911.3%–

642Dauphin County, PAPA293,35111.3%–

643Delaware County, OHOH242,03211.3%–

644Hinds County, MSMS211,88811.2%–

645Lake County, OHOH232,21711.2%–

646Douglas County, KSKS120,92011.2%–

647Loudoun County, VAVA449,74911.2%–

648Richland County, SCSC434,95611.2%–

649Horry County, SCSC427,55111.1%–

650Marion County, OROR355,77711.0%–

651Hillsborough County, FLFL1,574,11510.9%–

652Westchester County, NYNY1,015,74310.9%–

653Monterey County, CACA433,72910.8%–

654Pima County, AZAZ1,074,68510.8%–

655Lubbock County, TXTX328,90610.8%–

656Lackawanna County, PAPA216,50210.8%–

657Will County, ILIL712,25310.6%–

658Caddo Parish, LALA224,22610.6%–

659Weld County, COCO378,42610.6%–

660Butler County, OHOH400,12810.3%–

661Cache County, UTUT145,00010.2%–

662Brazos County, TXTX249,08810.1%–

663Racine County, WIWI198,91910.1%–

664Potter County, TXTX114,45310.0%–

665Ocean County, NJNJ673,7469.9%–

666Baltimore County, MDMD847,6509.9%–

667Lake County, ILIL719,3399.9%–

668Kenosha County, WIWI168,4489.8%–

669Dane County, WIWI590,3759.8%–

670Platte County, MOMO114,4009.8%–

671Larimer County, COCO377,2929.7%–

672Kane County, ILIL525,7579.7%–

673Flagler County, FLFL140,3609.7%–

674Kings County, CACA154,3279.6%–

675Montgomery County, ALAL225,8919.6%–

676Winnebago County, WIWI174,2189.6%–

677Vanderburgh County, ININ181,9959.6%–

678Riverside County, CACA2,544,9169.5%–

679Dallas County, IAIA118,4579.4%–

680Grand Forks County, NDND74,5019.4%–

681Woodbury County, IAIA106,6499.3%–

682Tooele County, UTUT87,4619.3%–

683Linn County, IAIA232,0289.3%–

684Durham County, NCNC347,2409.3%–

685Monroe County, NYNY750,5069.2%–

686Osceola County, FLFL481,7189.1%–

687Prince William County, VAVA502,9669.1%–

688Fresno County, CACA1,035,4569.0%–

689Albany County, NYNY321,2258.9%–

690Cameron County, TXTX433,9468.9%–

691Oklahoma County, OKOK822,1258.9%–

692Erie County, NYNY946,7418.8%–

693Charleston County, SCSC436,2008.8%–

694Champaign County, ILIL209,9728.7%–

695Story County, IAIA101,2918.7%–

696Black Hawk County, IAIA131,5328.7%–

697Douglas County, COCO399,3968.7%–

698Chatham County, GAGA311,8558.6%–

699Carver County, MNMN114,3798.4%–

700Washoe County, NVNV509,3868.2%–

701San Joaquin County, CACA823,8158.1%–

702Pulaski County, ARAR404,6118.1%–

703Stanislaus County, CACA557,7198.0%–

704Clay County, MOMO265,0328.0%–

705Chesapeake, VAVA255,3328.0%–

706Williamson County, TXTX752,8277.9%–

707King County, WAWA2,344,9397.9%–

708Wyandotte County, KSKS170,5977.9%–

709Somerset County, NJNJ356,4867.8%–

710Lynchburg, VAVA81,3477.8%–

711Monmouth County, NJNJ651,0357.8%–

712Scott County, IAIA175,2597.8%–

713Riley County, KSKS72,5987.8%–

714Miami-Dade County, FLFL2,802,0297.7%–

715Imperial County, CACA181,4117.7%–

716Brown County, WIWI275,8037.7%–

717Galveston County, TXTX372,2077.6%–

718St. Clair County, ILIL250,7087.6%–

719Palm Beach County, FLFL1,575,7267.5%–

720Macomb County, MIMI886,2217.4%–

721Passaic County, NJNJ531,6247.2%–

722Natrona County, WYWY80,5267.2%–

723El Paso County, COCO757,0407.1%–

724Lake County, ININ504,6127.0%–

725Allen County, ININ402,3297.0%–

726Mercer County, NJNJ399,2897.0%–

727Boone County, MOMO191,7466.8%–

728Boulder County, COCO328,5606.6%–

729Hamilton County, ININ387,0366.5%–

730Minnehaha County, SDSD212,6916.4%–

731St. Charles County, MOMO426,4996.4%–

732New Hanover County, NCNC245,9596.3%–

733Cobb County, GAGA793,3456.3%–

734Kenton County, KYKY175,7796.2%–

735Tulsa County, OKOK698,7826.2%–

736Nassau County, NYNY1,398,9396.1%–

737New Castle County, DEDE588,0266.1%–

738Lucas County, OHOH423,3476.0%–

739Washington County, UTUT213,6705.9%–

740Jefferson County, COCO580,4515.9%–

741Montgomery County, PAPA877,6435.8%–

742Nueces County, TXTX352,9925.7%–

743Wichita County, TXTX129,5555.7%–

744Henrico County, VAVA342,7755.7%–

745Sedgwick County, KSKS538,4335.6%–

746Dakota County, MNMN457,7105.5%–

747Manatee County, FLFL468,2005.4%–

748Travis County, TXTX1,389,6705.4%–

749Washington County, OROR611,7085.3%–

750Denton County, TXTX1,069,3465.3%–

751San Diego County, CACA3,282,2485.3%–

752East Baton Rouge Parish, LALA456,1805.3%–

753Polk County, IAIA516,5465.2%–

754Santa Barbara County, CACA442,0655.2%–

755DeKalb County, GAGA774,3945.1%–

756Marin County, CACA253,6945.1%–

757Ada County, IDID546,1415.1%–

758Hamilton County, OHOH838,4185.0%–

759Cass County, NDND201,7945.0%–

760Montgomery County, MDMD1,074,5824.9%–

761Bexar County, TXTX2,160,0884.9%–

762Weber County, UTUT278,1744.9%–

763DuPage County, ILIL934,2984.9%–

764Fulton County, GAGA1,098,7914.8%–

765Marion County, ININ992,1964.7%–

766Fairfax County, VAVA1,167,8734.7%–

767Rockland County, NYNY357,3974.6%–

768Collin County, TXTX1,297,1794.5%–

769Maricopa County, AZAZ4,689,5584.4%–

770Bernalillo County, NMNM667,6014.3%–

771Montgomery County, OHOH539,5984.3%–

772Fort Bend County, TXTX975,1914.2%–

773Adams County, COCO554,6684.2%–

774Jefferson County, TXTX254,3214.1%–

775Sarpy County, NENE208,3034.1%–

776Jackson County, MOMO732,9944.0%–

777Lancaster County, NENE334,0493.9%–

778Yolo County, CACA224,4103.9%–

779Delaware County, PAPA580,9373.8%–

780Solano County, CACA455,3763.8%–

781Mecklenburg County, NCNC1,233,3833.7%–

782Roanoke, VAVA99,1113.6%–

783Bergen County, NJNJ977,0263.6%–

784Ventura County, CACA830,8513.6%–

785York County, VAVA71,3743.5%–

786Johnson County, KSKS636,9063.4%–

787Davidson County, TNTN745,9043.3%–

788Broward County, FLFL2,013,3173.2%–

789Muscogee County, GAGA202,1713.1%–

790Sacramento County, CACA1,618,4603.1%–

791El Paso County, TXTX877,8583.1%–

792Fayette County, KYKY329,7512.9%–

793Jefferson County, KYKY795,2222.8%–

794Honolulu County, HIHI988,7032.8%–

795Tarrant County, TXTX2,248,4662.7%–

796Prince George's County, MDMD970,3742.7%–

797Allegheny County, PAPA1,225,0352.6%–

798Camden County, NJNJ535,7992.5%–

799Richmond County, NYNY501,2902.4%–

800Pinellas County, FLFL948,5632.4%–

801Shelby County, TNTN910,2262.4%–

802Clark County, NVNV2,407,2262.4%–

803Franklin County, OHOH1,361,5362.4%–

804Utah County, UTUT759,8592.3%–

805Santa Clara County, CACA1,914,3912.3%–

806San Mateo County, CACA743,5682.2%–

807Harris County, TXTX5,045,0262.2%–

808Arapahoe County, COCO673,8202.1%–

809Virginia Beach, VAVA453,7372.0%–

810Los Angeles County, CACA9,694,9342.0%–

811Hennepin County, MNMN1,284,7841.9%–

812Newport News, VAVA183,2301.9%–

813Multnomah County, OROR795,3911.7%–

814Baltimore, MDMD569,9971.7%–

815Cuyahoga County, OHOH1,232,9251.7%–

816Contra Costa County, CACA1,170,0701.6%–

817Middlesex County, NJNJ883,3351.6%–

818St. Louis County, MOMO990,9111.6%–

819Wayne County, MIMI1,769,0381.6%–

820Bronx County, NYNY1,406,3321.5%–

821Norfolk, VAVA231,0131.4%–

822Douglas County, NENE606,4601.4%–

823Cook County, ILIL5,194,6251.3%–

824Queens County, NYNY2,358,1821.3%–

825Broomfield County, COCO79,1741.2%–

826Jefferson Parish, LALA431,3981.1%–

827Hampton, VAVA137,3151.1%–

828Dallas County, TXTX2,661,3971.1%–

829Richmond, VAVA237,2570.9%–

830Milwaukee County, WIWI924,2160.9%–

831Alameda County, CACA1,636,6300.9%–

832Kings County, NYNY2,653,9630.9%–

833Hudson County, NJNJ735,0330.8%–

834Suffolk County, MAMA791,8910.8%–

835Ramsey County, MNMN541,6230.7%–

836Orange County, CACA3,149,5070.7%–

837Arlington County, VAVA243,9310.7%–

838Salt Lake County, UTUT1,220,9160.6%–

839Philadelphia County, PAPA1,574,2810.6%–

840Orleans Parish, LALA362,1540.6%–

841Essex County, NJNJ896,3790.6%–

842New York County, NYNY1,664,8620.5%–

843District of Columbia, DCDC693,6450.5%–

844San Francisco County, CACA826,0790.4%–

845St. Louis, MOMO278,1440.3%–

846Union County, NJNJ601,8630.3%–

847Denver County, COCO740,6130.2%–

SHOWING 501–847 OF 847

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UPDATED 2026-10-29 · DATA: US CENSUS BUREAU ACS 1-YEAR ESTIMATES