Iowa Deer Populations Decline to Lowest Level in Over a Decade
Iowa white-tailed deer populations have dropped to their lowest relative abundance in more than ten years, according to a spring spotlight survey conducted by the Iowa Department of Natural Resources.
The 2026 spring survey, which scans for wildlife after sunset along gravel roads throughout the state, recorded a 20% decline in relative deer abundance compared to 2025, reaching the lowest estimated level since 2013. State wildlife officials note that populations declined across all regions of the state, prompting new management restrictions in western counties to encourage population recovery.
New Hunting Restrictions Implemented in Western Iowa
To address regional declines, the Iowa Department of Natural Resources implemented a new regional hunting zone this year covering eight western counties.
The measures limit quotas for county-specific licenses and require hunters to target antlered deer only in Crawford, Ida, Lyon, O’Brien, Plymouth, Shelby, Sioux, and Woodbury counties. All other counties are considered part of Zone A and do not have the same restrictions, though there is an antlered-buck only restriction in certain Zone A counties during the first gun season.
Jace Elliott, state deer biologist for the department, stated that bow hunters reported seeing fewer deer throughout much of the state.
“Bow hunters are our most avid hunting group, spending the most time in the field,” Elliott said in a news release. “And what we’ve been hearing from them in recent years is they are seeing fewer deer throughout much of the state.”
While populations dropped statewide, Elliott noted “there is evidence” that deer herds in western Iowa are starting to rebound. Hunters should consult the official hunting guide before heading into the field.
Disease Tracking and Environmental Factors Impacting Counts
The precise causes of the broader population decline remain unclear, according to the spotlight survey report.
While white-tailed deer continue to face exposure to epizootic hemorrhagic disease, a fatal disease spread by small insects, reported mortality rates from the disease remained relatively low in 2025. Although mortality from hemorrhaging diseases was higher in the last several years, overall deer abundance stayed stable during those periods. The survey report suggests that unaccounted-for atmospheric or landscape conditions may have influenced the counts.
Chronic Wasting Disease also affects herds in the state, though wildlife officials did not list it as a reason for the statewide population drop. Department data shows that 192 deer across 29 counties tested positive for chronic wasting disease in 2025, with concentrations highest in eastern and south-central Iowa. For the 2026-2027 hunting season, the department database indicates more than 240 samples have been collected, with no confirmed positives to date.
Weather Shifts Altering Hunter Success This Fall
Weather conditions have complicated the fall hunting season, as bow hunters contend with warmer temperatures and near record-high rainfall totals recorded in September.
“Mother Nature hasn’t been cooperating” with bow hunters due to the wet weather and abundant natural forage, which has kept deer remaining in timbered areas with heavy cover and food, according to Elliott. Recent drier weather has allowed farmers to make progress on crop harvesting, which officials expect will help hunters locate deer as fields clear.
Bow hunters, whose first season runs through Dec. 4, are seeing improved conditions as cooler autumn temperatures arrive. State harvest data shows hunters took 101,919 deer during the 2025-2026 season, representing a 1% increase over the previous year, driven largely by a 4% rise in bow harvests.
Frequently Asked Questions About Iowa Deer Seasons
How can hunters find specific county regulations and license quotas?
Hunters can consult the Iowa Department of Natural Resources hunting guide for complete information on county-specific license types and bag limits before heading out to tree stands.
Where are Chronic Wasting Disease concentrations highest in Iowa?
According to department data, the highest concentrations of chronic wasting disease were detected in eastern and south-central Iowa, where 192 deer across 29 counties tested positive for the disease in 2025.
What are the primary management goals for the current hunting season?
The department’s management priorities for the current season are to maintain deer population in most of the state and to increase population in western Iowa.
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