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 14th most recorded of 74 mammals logged in Iowa

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

Records from 2000–2026.

309 total records count every Iowa occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 303 records with a full observation date.

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

Most sightings fall in June to July.

303 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
March6
April46
May42
June88
July61
August40
September14
October6
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

300 records mapped · zoom and drag to explore

300 Iowa records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Brushy Creek State Recreation Area 5
Iowa Lakeside Lab 3
Decorah and the Driftless Area 1
Bays Branch Wildlife Management Area 1
Pleasant Creek State Recreation Area 1
Lake Anita State Park 1
Dewey's Pasture Complex 1
Springbrook State Park 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
Johnson County 28
Polk County 27
Jasper County 22
Story County 20
Clay County 17
Crawford County 14
Mahaska County 14
Palo Alto County 14
Dickinson County 12
Monona County 12
Clayton County 12
Linn County 10
49 other counties 107

The complete county distribution, spread across 61 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: