Iowa's Best Deer Counties per Square Mile: Van Buren by a Hair

Van Buren County leads Iowa in deer registered per square mile, averaging 5.28 a season over 2020 to 2024. Allamakee (5.22) and Clayton (5.21) finish within 0.07 of it, northeast Iowa and the southern tier fill most of the top 20, and the northwest row-crop counties sit at the bottom, ending with Calhoun at 0.24. The figures divide registered deer by county land area for all 99 counties, so they show where hunters registered the most deer per square mile and leave the size of the herd unmeasured.

Lucas and Davis make the idea concrete. Hunters registered almost the same number of deer in each, an average of 1,838 a season in Lucas and 1,828 in Davis. Lucas ranks sixth per square mile at 4.23 and Davis thirteenth at 3.62, because Davis spreads its kill across more land. The rate repeats that division for all 99 counties: each county's registered deer, averaged over the 2020 to 2024 seasons, divided by its land area in square miles from the USDA Cropland Data Layer county summaries. Dividing corrects for county size, which a raw total cannot do.

Van Buren leads at 5.28, Allamakee is second at 5.22 and Clayton third at 5.21, so the whole podium spans 0.07 deer per square mile. A gap that small argues for reading the three as a group and choosing among them on access. Madison follows at 4.91 and Monroe at 4.57.

The top of this list matches the top of the raw totals. The four leading counties by rate are the same four that lead by total, in a different order: Clayton first at 4,128 deer a season, Allamakee second at 3,439, Madison third at 2,760 and Van Buren fourth at 2,592. That agreement makes the four the safest names in the state to start from, since they lead whether you ask where hunters registered the most deer or where they registered the most for the ground. Clayton's long run at the head of the raw list is one of the streaks we follow in our study of which counties lead each state's totals, which sets each leader against this same rate.

For scale, Van Buren's rate is about 3.2 times the median county's 1.65, and even the 20th-ranked county, Des Moines at 3.23, registered nearly twice the median.

Averages can hide one strong year, so we also ranked the counties season by season. A season's top tenth has room for nine of Iowa's 99 counties, since a tenth of 99 is 9.9 and we drop the fraction. Seven counties made the cut in every year of the window: Allamakee, Appanoose, Clayton, Lucas, Madison, Monroe and Van Buren. They are the first seven rows of the five-season ranking, ending with Appanoose at 4.13. The other two places went to different counties in different seasons, so the edge of the top tenth moves while its core holds. The next two in the average are Warren (4.06) and Lee (3.75).

Below the top four the two lists split, and several counties in the state's southern tier climb when you divide by land. Monroe ranks twelfth by total (1,985 deer a season) and fifth by rate. Lucas moves from seventeenth to sixth, Clarke from twenty-fourth to twelfth, Jefferson from twenty-sixth to seventeenth and Des Moines from thirtieth to twentieth. A modest total behind a high rate means a county with little land, so these are small counties where hunters registered a lot of deer for their size.

The move runs the other way for Winneshiek, fifth by total (2,460) and fifteenth by rate at 3.57, and for Jackson, Dubuque and Guthrie, which slide from sixth, eighth and tenth by total to eleventh, fourteenth and sixteenth by rate. In those counties a larger total sits behind a lower rate, which means more land.

The ten lowest run from Plymouth at 0.43 to Calhoun at 0.24, and all ten are row-crop counties, with corn and soybeans covering most of the land in each. The best of them sits at about a quarter of the state median, and Van Buren's rate is 22.4 times Calhoun's. Osceola (126 deer a season) and Ida (127) registered the fewest deer in the table. Our forest-cover paper found Iowa to be the state, among the five it covered, where tree cover and harvest per square mile lined up most closely, and this ranking shows the same split at its extremes.

The Iowa DNR's own zones draw a similar line. Starting with the 2026 deer season, resident licensing divides into Zone A and Zone B, and the general license in Zone B is valid for antlered bucks only, with limited exceptions and no party hunting. The DNR's deer page describes Zone B as counties "where deer populations are lower or more sensitive to additional harvest." The eight Zone B counties are Crawford, Ida, Lyon, O'Brien, Plymouth, Shelby, Sioux and Woodbury, and four of them, Plymouth, O'Brien, Sioux and Ida, are among our ten lowest.

The zones take effect after the seasons we counted, so they cannot explain our numbers. What they give is the agency's own reading of the same part of the state, reached by a different route: public meetings with hunters worried about low deer populations, according to the DNR.

The harvest counts are what hunters registered with the Iowa DNR by county, across five seasons for all 99 counties, and we did not measure how complete the reporting is. Area comes from the Cropland Data Layer's own mapped area for each county, inland lakes and rivers included. A rate built from kills reflects hunter effort, access and antlerless permits as well as deer, and cannot stand in as a population estimate. A county with a low rate may have few deer, few hunters, tight permit limits or little ground open to hunting, and these data cannot tell those apart. The 22.4 ratio comes from unrounded county averages, so dividing the rounded 5.28 by 0.24 lands a little lower. Five seasons show recent behavior and cannot show a trend.

We believe Iowa's list should be read in groups more than in strict order, so treat the top three as one group and add Madison, since those four lead on both rate and total. Pick among them by what you can reach: permission, public ground and the number of other hunters matter more than a 0.07 gap.

For a second tier, Monroe (4.57), Lucas (4.23) and Appanoose (4.13) are the next three by rate, and all three held a top-tenth place in every season. Before you spend a season on a county outside the top 20, check the DNR's zone map. None of the eight Zone B counties appears in the top 20 table. The DNR's deer page also lists a January antlerless population management season limited to Allamakee and Winneshiek counties, both in the top 20, which opens only if more than 100 antlerless licenses remain on the third Monday in December. Read the current rules before you plan around it.

For the wider picture of where Iowa's harvest sits, The Two Iowas describes the wooded northeast carrying far more of it than the corn-and-soybean northwest.