Oneill, NE is a city located in Holt County, Nebraska and has a land area of 545.18 square miles (1,412.01 km2). The water area for the city is 0.31 square miles or 0.80 km2. There is one unique zip code in Oneill, Nebraska and it is 68763. The area code(s) for Oneill is 402/531.
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