My Local Guide

Great Lakes, Summer Traditions, Four-Season Adventure

Dickinson County, Iowa

Dickinson County is the heart of the Iowa Great Lakes, where Spirit Lake, West Okoboji, East Okoboji, and a chain of smaller lakes shape daily life, tourism, recreation, and local identity. Spirit Lake serves as the county seat, while Arnolds Park, Okoboji, Milford, Lake Park, and other communities add their own character. Visitors come for boating, beaches, fishing, trails, museums, amusement rides, concerts, parks, and lakeside dining, while residents enjoy strong schools, health care, local businesses, and year-round community life.

Dickinson County at a Glance

Population18,077 (2025 estimate)
County SeatSpirit Lake
Largest CitySpirit Lake
Established1857
ZIP CodesMultiple ZIP Codes across 10 incorporated communities
Total AreaAbout 404 sq. mi. total
Major RoutesU.S. 71, Iowa 9, Iowa 86
Area Code712
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Discover Dickinson County

Dickinson County

Dickinson County was formally organized in 1857 after pioneer settlement around the Iowa Great Lakes. Spirit Lake became the county seat, and the region’s lakes quickly shaped settlement, fishing, transportation, and recreation. The county is named for Daniel S. Dickinson, a New York lawyer and U.S. senator. Over generations, the Iowa Great Lakes developed into one of the Midwest’s best-known vacation areas while farming, small-town commerce, tourism, and local industry continued to support year-round communities.

Today, Dickinson County combines resort energy with everyday small-town life. Arnolds Park Amusement Park, West Lake Okoboji, Spirit Lake, beaches, marinas, golf, museums, trails, and conservation areas draw visitors throughout the year. Summer is the busiest season, but fishing, hunting, winter recreation, community events, schools, health care, and regional services keep the county active in every season.

What Shapes Us

Great Lakes Heritage

Historic lake communities, boating traditions, museums, amusement-park history, and generations of family vacations have made the Iowa Great Lakes central to local identity.

Water & Wildlands

Natural lakes, wetlands, prairie, woodland, wildlife areas, and river corridors support boating, fishing, hiking, paddling, birding, hunting, and scenic exploration.

Four-Season Community

Tourism, schools, health care, retail, agriculture, services, festivals, and year-round recreation support an active network of lake towns and rural communities.

Lakes connect the towns, traditions connect the people.
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County Resources

Everything You Need. All in One Place.

Find trusted county, city, school, health, safety, recreation, transportation, library, court, veteran, and employment resources serving Dickinson County and the Iowa Great Lakes.

Government

Dickinson County Government
County departments, courthouse services, public notices, elections, meetings, and forms.
Official Website
Phone: 712-336-6333

Dickinson County Departments
Directory of county offices and public services.
Official Website

City of Spirit Lake
Municipal services and information for the county seat.
Official Website

City of Arnolds Park
Municipal services and city information for Arnolds Park.
Official Website

City of Milford
Municipal services and community information for Milford.
Official Website

State of Iowa
State agencies, online services, and public information.
Official Website

We’re Here To Help.

Quick answers for visiting, living, exploring, and getting around Dickinson County.

Helpful Information

Frequently Asked Questions

Get practical answers about the Iowa Great Lakes, parks, trails, boating, attractions, events, shopping, dining, and year-round county life.

The county’s best-known attractions are centered on the Iowa Great Lakes. Start with Arnolds Park Amusement Park, explore the Iowa Great Lakes Maritime Museum, spend time on West Lake Okoboji or Spirit Lake, and visit the nature areas and state parks around the lakes. The regional tourism site Vacation Okoboji is useful for current attractions and events.

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Meet Local Businesses

Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.

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Top Picks for Every Kind of Day

From lake days and amusement rides to trails, museums, parks, shopping, and local dining, Dickinson County offers something memorable in every season.

Every place has a story.Find Your Next Favorite.
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