County · code 31081
Hamilton CountyNebraska
Hamilton County is a county in Nebraska with its seat in Aurora. The county was created in 1867 from Non-County Area 3 and named after Alexander Hamilton.
- Founded1867
- County seatAurora
- Named forAlexander Hamilton
- Land area542 sq mi + 2.6 sq mi water
- Population9,429 2020 Census
- Parcels mapped8,241 checked 15 October 2026
Where it is
Hamilton on the map of Nebraska
Nebraska has 93 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Founded in 1867
An old deed may name a county that no longer exists, or a boundary that has since moved.
Hamilton County was created by Nebraska Territory on February 16, 1867, from Non-County Area 3, but was not fully organized at that time. The county became fully organized on May 3, 1870. In 1873, Hamilton County's boundary with Merrick County was adjusted to run in the middle of the south channel of the Platte River.
- 1867Hamilton County created Hamilton created by Nebraska Territory from Non-County Area 3; Hamilton not fully organized. · Neb. Terr. Laws 1867, 12th reg. sess., sec. 2/pp. 31-32
- 1870Changed Hamilton fully organized. · History of Neb., 948
- 1873Changed Hamilton boundary with Merrick adjusted to run in the middle of the south channel of the Platte River. · Neb. Laws 1873, 9th sess., pp. 57-58
Land and parcels
What the maps cover in Hamilton
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 8,241 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 15 October 2026 -
Address points Official
One point per address, 4,977 in all from Nebraska Public Service Commission (PSC), 911 Department.
checked 13 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Hamilton by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Hamilton County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Hamilton County.
See your own lot on these maps
Open Hamilton County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Hamilton County
- When was Hamilton County founded?
- Hamilton County was founded in 1867, and named after Alexander Hamilton.
- What is the county seat of Hamilton County?
- The county seat of Hamilton County is Aurora.
- Is there an online parcel map for Hamilton County?
- Yes. A public source publishes a parcel map of 8,241 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Hamilton County's boundary or name changed?
- Hamilton County was created in 1867. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving Merrick County.
- Is my lot in a flood zone?
- We do not have flood maps for Hamilton County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby