Cortlandt township, South Dakota
Cortlandt township profile, demographic data, and geographic information.
Cortlandt township is a geographic entity located in Edmunds County, South Dakota. As of official census estimates, it has a reported population of 630. The land area covers 34.33 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population (2025 PEP Estimate) | 630 | — | 2025 / Census |
| Median Age | 52.7 yrs | ±9.3 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 322 | ±65 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 326 | ±66 |
| Occupied Housing Units | 322 | ±65 |
| Vacant Housing Units | 4 | ±5 |
| Median Home Value | $375,000 | ±$73,206 |
| Median Gross Rent | $1,216 | ±$670 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $103,611 | ±$30,503 |
| Per Capita Income | $57,681 | ±$16,642 |
| Poverty Rate | 2.1% | ±1.8% |
| Population Below Poverty Level | 17 | ±15 |
| Unemployment Rate | 2.2% | ±2.6% |
| Civilian Labor Force, Employed | 408 | ±112 |
| Broadband Internet Rate | 100% | ±0% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
TOWNSHIP OF CORTLANDT
GUS Population: 628 (2024)
ID: 175289
|
Township | Official Local Government |
Contact: CLERK
279 S SUNSET DR, MINA SD 57451-3021
|
|
GUS Population: 4,027 (2024)
ID: 194049
|
County | Official County Government |
Contact: COUNTY AUDITOR
PO BOX 97, IPSWICH SD 57451
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-05 | Aberdeen, SD | |
| Regular School Nearby | 09-12 | Ipswich, SD | |
| Regular School Nearby | PK-08 | Leola, SD | |
| Regular School Nearby | KG-08 | Westport, SD | |
| Regular School Nearby | 06-08 | Aberdeen, SD | |
| Regular School Nearby | PK-05 | Ipswich, SD | |
| Regular School Nearby | 09-12 | Ipswich, SD | |
| Regular School Nearby | 06-08 | Ipswich, SD | |
| Regular School Nearby | PK-05 | Aberdeen, SD | |
| Regular School Nearby | KG-08 | Wetonka, SD |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 4 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Northern State University
|
College | 14.0 mi away | 1200 S Jay St, Aberdeen, SD, 57401-7198 |
6056263011
|
|
M. P. BEEBE MEMORIAL LIBRARY
|
Library | 12.3 mi away | 120 MAIN, IPSWICH, SD, 57451 |
(605) 426-6707
|
|
K.O. LEE ABERDEEN PUBLIC LIBRARY
|
Library | 14.0 mi away | 215 FOURTH AVENUE SE, ABERDEEN, SD, 57401 |
(605) 626-7097
|
|
LEOLA PUBLIC LIBRARY
|
Library | 20.2 mi away | 802 MAIN STREET, LEOLA, SD, 57456 |
(605) 439-3383
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at IPSWICH, SD US, located 12.9 miles from Cortlandt township. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 23.5° | 3.0° | 13.3° | 0.35" | 6.0" |
| February | 28.3° | 6.9° | 17.6° | 0.54" | 6.8" |
| March | 41.2° | 18.9° | 30.0° | 0.85" | 5.4" |
| April | 56.5° | 31.0° | 43.8° | 1.79" | 4.0" |
| May | 69.0° | 43.6° | 56.3° | 2.99" | 0.0" |
| June | 78.5° | 54.7° | 66.6° | 3.48" | 0.0" |
| July | 83.7° | 59.4° | 71.6° | 3.13" | 0.0" |
| August | 81.8° | 56.6° | 69.2° | 2.40" | 0.0" |
| September | 73.5° | 47.0° | 60.2° | 1.94" | 0.0" |
| October | 58.4° | 33.6° | 46.0° | 1.67" | 1.1" |
| November | 41.9° | 19.7° | 30.8° | 0.54" | 4.7" |
| December | 28.3° | 8.8° | 18.6° | 0.48" | 5.7" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Mina CDP | CDP | 1.7 mi | — |
| Long Lake Colony CDP | CDP | 10.6 mi | — |
| Deerfield Colony CDP | CDP | 11.1 mi | — |
| Wetonka town | Town | 11.8 mi | — |
| Pembrook Colony CDP | CDP | 12.0 mi | — |
| Ipswich city | City | 12.5 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 4604514060. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.