Iowa mammals

Thirteen-lined ground squirrel in Iowa

Ictidomys tridecemlineatus

Native to Iowa S5 Secure in Iowa

Not listed as nonindigenous in Iowa by USGS NAS; native to its Iowa range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Thirteen-lined ground squirrel in Iowa, by the numbers

Common in Iowa 13th most recorded of 74 mammals logged in Iowa

175 occurrence records
175 with iNaturalist photos
Jul 9, 2026 Last seen in Iowa

Records from 2000–2026.

175 total records count every Iowa occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 165; the monthly chart covers the 165 records with a full observation date.

When to look for the Thirteen-lined ground squirrel in Iowa

Most sightings fall in June to July.

165 Iowa occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Iowa records (table)
MonthRecords
January0
February0
March5
April22
May24
June42
July40
August20
September10
October2
November0
December0

Monthly thirteen-lined ground squirrel occurrence records (iNaturalist and GBIF) in Iowa, 2000–2026.

Seasonality

Year-round in Iowa, with recorded sightings peaking in June–July.

Occurrence map

Where Thirteen-lined ground squirrel has been recorded in Iowa

165 records mapped · zoom and drag to explore

165 Iowa records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Iowa Lakeside Lab 3
Lake Anita State Park 1
Brushy Creek State Recreation Area 1
Dewey's Pasture Complex 1
Pleasant Creek State Recreation Area 1
Bays Branch Wildlife Management Area 1
Union Hills Waterfowl Production Area 1

Protected places with the most thirteen-lined ground squirrel sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Iowa

CountyRecords
Polk County 23
Jasper County 20
Story County 17
Dickinson County 10
Linn County 7
Johnson County 6
Floyd County 5
Cerro Gordo County 5
Woodbury County 5
Allamakee County 4
Adair County 4
Webster County 3
38 other counties 66

The complete county distribution, spread across 50 Iowa counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Thirteen-lined ground squirrels favor short, well-drained grass rather than tall prairie. In Iowa they are often encountered on mowed parkland, roadsides, cemeteries, pastures, and recreation grounds, where their upright posture and striped backs are conspicuous.

Neal Smith National Wildlife Refuge and Iowa state parks include maintained grass near their natural areas, while open sites around Decorah provide additional viewing opportunities. Watch from a distance near burrow entrances instead of blocking the animal’s retreat.

The records are strongly seasonal: sightings surge from April through July and nearly disappear in winter. That reflects true dormancy underground during hibernation, so the frontmatter’s year-round shorthand should be interpreted cautiously.

Occurrence data from iNaturalist and GBIF.

More mammals in Iowa in the atlas

Data & sources

The data and visualizations on this page draw on these open sources: