Hamilton County is a county in Nebraska, United States, centred on the market town of Aurora along Interstate 80 in the central part of the state. It had a population of 9,429 at the 2020 census and covers 547 square miles (1,420 km2), of which 544 square miles is land and 4.1 square miles is water, centred near 40°53′N 98°01′W.
Aurora is the county seat and its postal code is 68818. The county has one city, six villages and one census-designated place. Hamilton County is part of the Grand Island, NE Combined Statistical Area and observes Central Time.
Towns & Villages in Hamilton County
Hamilton County has eight named communities: one incorporated city (the county seat), six incorporated villages, and one unincorporated census-designated place. Two additional names from historical county lists — Kronborg and Murphy — survive only as rural place names or former post offices and are listed below as unincorporated.
| Place | Type | Pop. | ZIP |
|---|---|---|---|
| Aurora | City · seat | — | 68818 |
| Giltner | Village | — | 68841 |
| Hampton | Village | — | 68843 |
| Hordville | Village | — | 68846 |
| Marquette | Village | — | 68854 |
| Phillips | Village | — | 68865 |
| Stockham | Village | — | — |
| Overland | CDP | — | — |
| Kronborg | Unincorp. | — | — |
| Murphy | Unincorp. | — | — |
ZIP Codes
- 68818 — Aurora (also serves the surrounding rural area)
- 68841 — Giltner
- 68843 — Hampton
- 68846 — Hordville
- 68854 — Marquette
- 68865 — Phillips
Stockham, Overland, Kronborg and Murphy have no ZIP code of their own and use a neighboring town’s post office.
Geography
Hamilton County sits on the flat, fertile plain of the Platte River valley in central Nebraska, with the Platte forming part of its northern edge and the smaller Lincoln Creek and West Blue River draining the interior. The land is almost entirely given over to irrigated row-crop farming, with center-pivot fields covering most of the county’s 544 square miles of land area. Elevation is gentle and uniform, typical of the Platte valley terrace, and the county has no significant hills or public lakes. The county borders Merrick County to the north, Polk County to the northeast, York County to the east, Clay County to the south, Adams County to the southwest, and Hall County to the west.
Demographics
Hamilton County’s population was 9,429 at the 2020 census. Aurora and Giltner are the county’s two largest communities. Nebraska’s median household income was $74,590 (2023 ACS); Hamilton County, an agricultural county with a small-town population base, has historically tracked close to that state figure. The county’s overall density works out to roughly 17 people per square mile.
Economy & Local Life
Agriculture — corn, soybeans and cattle — anchors the county economy, supported by grain handling, crop insurance and farm equipment businesses centered in Aurora. Aurora is also home to the Edgerton Explorit Center, a hands-on science museum, and Aurora Cooperative, a major regional grain and agronomy cooperative headquartered in the city. The smaller villages function chiefly as farm-service points, each with a grain elevator, a school or church, and a handful of local businesses serving the surrounding farmland. Hamilton County’s schools — Aurora Public Schools being the largest — and its county government offices, also based in Aurora, are among the area’s steadiest employers outside of farming itself.
History
The first permanent settlers reached Hamilton County in 1866. The county was created in 1867 and formally organized in 1870, and it takes its name from Alexander Hamilton, the first U.S. Treasury Secretary. Aurora was platted soon after organization and grew as the county’s rail and market center, helped by the arrival of the railroad, which cemented its position over competing early townsites. The county’s villages generally trace their origins to the same rail-building era of the late 1870s and 1880s, when depots and grain elevators drew settlement at roughly even intervals across the farmland.
Getting There
Interstate 80 crosses the county and U.S. Highway 34 runs through Aurora, along with several state highways.
- Grand Island — 25 miles west
- York — 20 miles east
- Hastings — 25 miles southwest
- Lincoln — 75 miles east
The nearest commercial airport is Central Nebraska Regional Airport in Grand Island.
Frequently Asked Questions
Where is Hamilton County, Nebraska?
It lies in central Nebraska along Interstate 80, between Grand Island and York.
What is the population of Hamilton County?
9,429, per the 2020 census.
How big is Hamilton County?
547 square miles (1,420 km2), including 4.1 square miles of water.
What is the county seat of Hamilton County?
Aurora is the county seat.
How many towns are in Hamilton County?
One city, six villages and one census-designated place, plus a couple of small unincorporated places.
What ZIP codes are in Hamilton County?
68818 (Aurora), 68841 (Giltner), 68843 (Hampton), 68846 (Hordville), 68854 (Marquette) and 68865 (Phillips).
What is Hamilton County named after?
Alexander Hamilton, the first U.S. Secretary of the Treasury.
More counties in this state: Towns and villages in Nebraska.