Eastern Plains
Sedgwick County
Property taxes, marriage licenses, vehicle services, and many public records run through Sedgwick County. Permits and local rules may sit with a town or city instead, so match the office to the exact address.
Official county shortcuts
Take the task to the office that handles it
These links go straight to the official county or regional office shown. Check that page for current documents, hours, appointments, fees, and address-specific instructions. A city may run its own permit office.
Property tax snapshot
Typical property tax in Sedgwick County
The average total mill levy across Sedgwick County was about 93.2 mills for tax year 2023 — above the statewide average of about 81 mills. On a $500,000 home, that comes to roughly $3,046 a year, using Colorado's 2026 residential rules: 7.05% on school mills, and 6.8% on the rest after the local actual-value adjustment.
This is the county average across all tax areas. Your parcel's actual mill levy depends on its exact tax area — a metro or special district can add many mills on top — so confirm the real number with the county assessor.
Sales tax: the state charges 2.9% and Sedgwick County adds 2%, for 4.9% before any city or special district. See Colorado sales tax rates ->
Source: Colorado Division of Property Taxation, 53rd Annual Report (2023) — Average Levies by County.
Incorporated places in this county
These cities and towns touch Sedgwick County. Some cross a county line. Every name opens a direct place page, and selected places include a fuller local guide.
Get to know Sedgwick County
The history, land, and character behind the place.
Water and land
Along the South Platte in Sedgwick County, well water is tied to the river
Many wells in the Julesburg area draw from the South Platte alluvial aquifer, which Colorado administers as part of the river — so a well here is not the same as unlimited water.
Read note ->Outdoors and wildfire
Jumbo Reservoir near Julesburg is a State Wildlife Area, not a park
The plains reservoir west of Julesburg, near Crook, is managed by Colorado Parks and Wildlife as a State Wildlife Area, which carries its own access and pass rules.
Read note ->History and culture
Julesburg moved four times - and one version was called the Wickedest City in the West
The town anchoring Sedgwick County has been built and rebuilt four times, and one short-lived end-of-track version earned the nickname Wickedest City in the West.
Read note ->History and culture
The Julesburg Drag Strip Still Races on an Old Airport Runway
On a stretch of the old Julesburg Municipal Airport runway, a quarter-mile drag strip has been running cars since the late 1950s and still races under NHRA sanction.
Read note ->Money and taxes (3)
Money and taxes
A Sedgwick County valuation protest is not a tax-bill protest
A Sedgwick County valuation protest challenges the property's actual value or classification, not the dollar amount of the tax bill.
Read note ->Money and taxes
Selling a manufactured home in Sedgwick County needs a tax authentication
Selling a manufactured home means clearing all property taxes and handing the buyer a tax authentication from the Treasurer's Office.
Read note ->Home and property (8)
Home and property
Sedgwick building permits come before new or remodeled work
In Sedgwick County the owner carries the building-permit duty, and no structure may be built, moved, or altered until the permit is issued.
Read note ->Home and property
A Sedgwick permit is not a county code inspection
Sedgwick County follows no specific building code and has no licensed inspector, so the owner carries the job of checking the work.
Read note ->Water and land (2)
Browse 1 more water and land notesOutdoors and wildfire (2)
Browse 1 more outdoors and wildfire notesCars and driving (1)
Local rules (9)
Local rules
In unincorporated Sedgwick County, zoning district comes first
Sedgwick County land sits in zoning districts, so check the district before assuming a home, business, shop, or rural use is allowed there.
Read note ->Local rules
Inside Sedgwick County towns, ask the town clerk too
Inside Julesburg, Ovid, or Sedgwick town limits, the town clerk holds the building-permit rules, not the county Planning and Zoning office.
Read note ->History and culture (4)
History and culture
The South Platte River Trail byway loops through Sedgwick County's frontier past
A short state-designated scenic and historic byway near Julesburg follows the old westward route past Fort Sedgwick and a Pony Express station site.
Read note ->History and culture
Julesburg's old Union Pacific depot tells the county's railroad story
The historic Union Pacific depot in Julesburg, saved by the county and a local historical society, is a regional museum and a State Register property that explains why the railroad shaped this corner of Colorado.
Read note ->Nearby counties
Other Eastern Plains counties — rules, rates, and districts shift across county lines.