Lyon County Iowa - Government Site
Population: 11,636
Area: 588 square miles
County Seat: Rock Rapids
Area Code(s) in use: 712
Time Zone: CST
Adjacent counties:
Lincoln (SD) Minnehaha (SD) Nobles (MN) O'Brien Osceola Rock (MN) Sioux
Airport
Merrill Pioneer Community Hospital Heliport, Rock Rapids Municipal Airport, Sudenga Industries Landing Field, Zangger Airport
Area
Big Sioux Wildlife Public Hunting Area
Bridge
Melan Bridge
Building
Dale Townhall, George Fire Department, George Public Library, Grant Townhall, Historic School Museum, Inwood Public Library, Larchwood Fire Station, Larchwood Public Library, Little Rock Fire Department, Little Rock Library, Lyon County Courthouse, Lyon County Historical Society Museum Complex, Lyon County Sheriffs Office, Midland Townhall, Rock Rapids Police Department, Rock Rapids Public Library
Cemetery
Apostolic Christian Cemetery, Beloit Cemetery, Bethlehem Cemetery, Evergreen Cemetery, First Baptist Church Cemetery, Garfield Township Cemetery, Grandview Cemetery, Grant Township Cemetery, Hillside Cemetery, Hillside Cemetery, Holy Name Cemetery, Hope Reformed Church Cemetery, Larchwood Cemetery, Lyon County First Presbyterian Church Cemetery, Our Saviors Lutheran Cemetery, Pleasant View Cemetery, Quaker Cemetery, Richland Cemetery, Riverside Cemetery, Saint Marys Cemetery, Saint Marys Cemetery, Zion Cemetery, Zion Cemetery, Zoar Presbyterian Church Cemetery
Church
Apostolic Christian Church, Bethel Church, Bethel Reformed Church, Bethel United Methodist Church, Central Baptist Church, Christ Lutheran Church, Christian Church, Christian Reformed Church, Congregational United Church, Doon Protestant Reformed Church, Ebenezer Presbyterian Church, English Lutheran Church, Evangelical United Methodist Church, Faith Baptist Church, First Baptist Church, First Congregational Church, First Presbyterian Church, First Presbyterian Church, First Reformed Church, First Reformed Church, First Reformed Church, Grandview Church, Holy Name Catholic Church, Hope Church, Immanuel Lutheran Church, Immanuel Lutheran Church, Inwood Christian Reformed Church, Lester United Methodist Church, New Life Assembly of God Church, Our Saviors Church, Peace Lutheran Church, Sacred Heart Catholic Church, Saint John Lutheran Church, Saint Mary Parish, Salem Reformed Church, Tabernacle Baptist Church, United Church of Christ, United Methodist Church, United Reformed Church, Zoar Church
Civil
Lyon County, Township of Allison, Township of Centennial, Township of Cleveland, Township of Dale, Township of Doon, Township of Elgin, Township of Garfield, Township of Grant, Township of Larchwood, Township of Liberal, Township of Logan, Township of Lyon, Township of Midland, Township of Richland, Township of Riverside, Township of Rock, Township of Sioux, Township of Wheeler
Forest
Gitchie Manitou State Preserve
Hospital
Canton Family Physicians Building, Denture Clinic, Family Health Care Building, George Community Good Samaritan Hospital, Jones Chiropractic Clinic, Larchwood Chiropractic Clinic, Larchwood Medical Clinic, Lyon Manor Care Center, Merrill Pioneer Community Hospital, Pioneer Medical Center, Pioneer Medical Center, Rapids Chiropractic Clinic
Locale
Alvord, Alvord Feed and Supply Incorporated Elevator, Anderson Feeds Incorporated Elevator, Beloit, Doon, Doon Elevator Company Elevator, Edna (historical), Edna Elevator Company Elevator, Farmers Co-op Elevator, Farmers Cooperative Exchange Elevator, Farmers Elevator Company Elevator, Farmers Elevator Company Elevator, George (historical), George Elevator Company Elevator, Granite (historical), Inwood (historical), Island Park Campground, Klondike River Access, Lakewood (historical), Larchwood (historical), Lester, Little Rock (historical), Little Rock Feed and Grain Company Elevator, Lyon County Fairgrounds, Rock Rapids (historical), Rock Rapids Country Club, United Farmers Cooperative Elevator, Westside Park Campground
Park
Big Sioux River Wildlife Area - Kroger Tract, Big Sioux River Wildlife Area - Nelson Tract, Big Sioux River Wildlife Area - Olson Tract, Blood Run / Rock Island National Landmark, Doon Wildlife Area, Emma Sater Park, Foote Park, Gutchie Manitou State Monument Park, Hidden Bridge Wildlife Area, Island Park, Kiwanis Park, Lake Pahoja Recreation Area, Lakewood Corners Wildlife Area, Little Rock River Wildlife Area - Central Unit, Little Rock River Wildlife Area - North Unit, River of Redrock Park, Roeman-Stetrichs Wildlife Area, Site of First White Mans Home in Lyon County Historical Marker, Tri-State Iron Post Historical Marker, Westside Park
Populated Place
Alvord, Beloit, Doon, Edna, George, Granite, Inwood, Klondike, Lakewood (historical), Lakewood Corner, Larchwood, Lester, Little Rock, Midland, Rock Rapids
Post Office
Alvord Post Office, Beloit Post Office (historical), Doon Post Office, Edna Post Office (historical), Ernest Post Office (historical), George Post Office, Gibraltar Post Office (historical), Granite Post Office (historical), Helgerson Post Office (historical), Inwood Post Office, Klondike Post Office (historical), Krogness Post Office (historical), Lakewood Post Office (historical), Larchwood Post Office, Lester Post Office, Little Rock Post Office, Riverview Post Office (historical), Rock Rapids Post Office, Smead (historical), Smead Post Office (historical), Smead Post Office (historical), Upland Post Office (historical), Willida Post Office (historical)
Reservoir
Lake Pahoja
School
Central Lyon High School, Central Lyon Junior High School, Christian School, Doon Christian School, George Elementary School, Inwood Christian School, Little Rock Community School, Northwest Iowa Protestant Reformed School, West Lyon School
Stream
Argo Slough, Blood Run, Blood Run, Blood Run, Blood Run, Blood Run, Blood Run, Blood Run, Emery Creek, Klondike Creek, Little Rock River, Little Rock River, Little Rock River, Lizard Creek, Moon Creek, Mud Creek, Mud Creek, Mud Creek, Nelson Creek, Otter Creek, Otter Creek, Otter Creek, Rat Creek, Rio Grande Creek, Tom Creek, Tom Creek, Tom Creek, West Rat Creek, Whitney Creek, Zoar Creek
Trail
Rock Rapids Trail, The Pahoja Recreation Trail
| Race | Population |
| White |  11,510 |
| Mixed | 50 |
| Black | 30 |
| Asian | 28 |
| American Indian | 17 |
| Hawaiian & Pacific Islander | 1 |
| Additional population tables : | |
| State population table | |
| Iowa population by county | |