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Welcome to O'Neill (aka 'O'Neill City') ...

The city of O'Neill is located in Holt County<1> and is the County Seat for Holt County.

While we don't have a date for the founding of O'Neill, you might get a feel for it by knowing that the earliest mention that we've found (so far) was on a map dated 1895.

From the  Census Estimates for 2019, O'Neill has a population of 3,585 people<2> (see below for details).

O'Neill is 2,000 feet [610 m] above sea level.<3>.

Time Zone: O'Neill lies in the Central Time Zone (CST/CDT) and observes daylight saving time

Area Codes for O'Neill: 402 & 531<4>

The city of O'Neill has also been called O'Neill City.

Population Details ...

Taken from the 2019 Census Estimates, O'Neill had an population of 3,585 people. This is a decrease of 3.24% since the 2010 Census (or a decrease of 3.96% since the 2000 Census).

At the time of the 2010 Census, O'Neill had a population of 3,705 people (which is 35.51% of the total population of Holt County). This makes O'Neill the county's most populous community.

The population of O'Neill represents 0.2% of the total population of Nebraska (which has 1,826,341 people), making it the state's 39th most populous community.

With a 2010 count of 3,705 people, the population of O'Neill has remained roughly the same as the 2000 Census (with a count of 3,733 people).

More information can be found on the Census Page for O'Neill.

Communities Also Named O'Neill ...

Using our Gazetteer, we found that there are 2 communities that are also named O'Neill - they are located in Iowa and West Virginia.

For more information, see our Tidbits & Trivia Page for O'Neill.

Communities near O'Neill ...

We have created a list of 10 communities that are near O'Neill.

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We created a list of cemeteries that are in the area around O'Neill. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for O'Neill.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of O'Neill. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around O'Neill.

We also have a detailed list of newspapers that have been published in the area around O'Neill. Our list includes 16 papers. See our Newspapers Page for O'Neill.

TripAdvisor Tourism Pages for O'Neill ...

Looking for more information about O'Neill? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

In addition to the Tourism page for O'Neill, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for O'Neill.

Adding O'Neill to Our Gazetteer ...

We originally found mention of O'Neill in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found (so far) for O'Neill was on a map titled Map of Nebraska (from Rand McNally, 1895).

For more details, see References and Mentions for O'Neill.

Footnotes ...

<1>If you're interested in how the shape of Nebraska's counties, including Holt, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for O'Neill.
<3>The elevation is an estimate for the area around O'Neill - it will be higher in some places and lower in others.
<4>When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 402 code has been Overlayed with the 531 area code. New phone numbers in the O'Neill area will be assigned with one of these codes: 402 or 531. As a result, placing a call in the O'Neill area will require 10-digit dialing (where you enter both the area code and then the phone number).
<5>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.