A Gazetteer for the United States and Canada
Census Data for Omaha (aka 'Omaha City') ...
The most recent Census Estimate<1> was for 2017 and it gave Omaha a population of 466,893 people.
The last Decennial Census<2> was in 2010, which gave Omaha a population of 408,958 people.
The city of Omaha is located in Douglas County. The 2010 Census gave Douglas County a population of 517,110 people. This means that Omaha had 79.1% of the county's total population, making it Douglas' most populous community.
When the Census Bureau conducts a census for a city like Omaha, they draw a boundary around the area in which they are going to conduct their count - this defines the sampling area (usually shaped as a polygon). The shape of the sampling area can be quite complex and it's important to keep in mind that the boundaries of the sampling area may or may not match the recognized boundaries of the city.
Things like the population, area and housing for Omaha reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Omaha might be different, it's best to check with the U.S. Census Bureau to resolve any difference between the two.
The 2010 Census shows that the sampling area for Omaha has a total area of 130.6 square miles [338.2 km²]. Of this total, 127.1 square miles [329.2 km²] is land, with the balance (2.67%) being water (3.49 square miles [9 km²]).
Douglas County has a land area of 328.5 square miles [850.7 km²]. At 127.1 square miles [329.2 km²], Omaha has 38.69% of the county's total land area.
Not only does the sampling area define boundaries, it also has a GPS location (latitude & longitude) that indicates a point within the sampling area (usually the center of the polygon, known as the centroid). At the time of the 2010 Census, the sampling area was located at:
Lat: 41° 15' 52" (or 41.26°) [Map]
More information on this topic and the changes between the 2000 Census and the 2010 Census can be found in the section for our Census-to-Census Observations ... (see below).
Population Density ...
Using the population (408,958 people) and land area (127.1 square miles [329.2 km²]) values from the 2010 Census, Omaha had a population density of 3,131 people per square mile [1,209 people/km²].
In comparison, the 2000 Census shows Omaha had a population of 390,007 people and a land area of 115.7 square miles [299.7 km²]. This gives a population density of 3,280 people per square mile [1,266 people/km²]
NOTE: Be aware that when comparing population density between the 2000 Census and the 2010 Census, there were changes in the sampling area for Omaha. You need to be careful when making such a comparison, the differences are likely to lead to an incorrect comparison. More information about the nature of these changes can be found in the section Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, Omaha had 177,518 Housing Units<3> and with its population of 408,958 people, this averages 2.3 people per Housing Unit.
The 2010 Census shows Omaha had a land area of 127.1 square miles [329.2 km²]. This translates to 1,359 Housing Units per square mile [524 housing units/km²].
From the Census of 2000: Omaha had 165,731 Housing Units, a population of 390,007 people and a land area of 115.7 square miles [299.7 km²]. This gives a density of 2.35 people per Housing Unit and 1,394 Housing Units per square mile [538 housing units/km²].
NOTE: Repeating the caution above (under Population Density), be aware that when comparing Housing Units between the 2000 Census and the 2010 Census, there were changes in the sampling area for Omaha and you need to be careful when comparing numbers between the censuses. More information about the changes can be found in the section called Census-to-Census Observations ... (see below).
Douglas County ...
The county had a population of 517,110 people at the 2010 Census. With it's population of 408,958 people, Omaha represented 79.1% of the county's total.
In addition, where the city of Omaha has a population density of 3,131 people per square mile [1,209 people/km²], Douglas County averages 1,574 people per square mile [607 people/km²].
For more information, please visit our Census Page for Douglas County.
Population Rings for Omaha ...
To help identify the number of people who live in Omaha and the surrounding area, we have drawn concentric rings centered on Omaha. We counted the number of communities within each ring and summed their populations.<5>
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for Omaha, they start by specifying the boundaries of the area to be counted. This area (or sampling area) is a polygon and its shape can be quite complex - it may or may not match the geographical boundaries of Omaha. It's important to note that from one Census to the next, the shape and location of the polygon can change. If you need precision or details about the methodology of the Census, you should visit the U.S. Census Bureau for a definitive answer.
The sampling area (or polygon) given for the 2010 Census is 9.84% larger than the 2000 Census.
The 2010 Census shows that the total area for Omaha was 130.6 square miles [338.2 km²]. Of this total, 127.1 square miles [329.2 km²] is land, with the balance (2.67%) being water (3.49 square miles [9 km²]).
The 2000 Census shows a total area of 118.9 square miles [307.9 km²]. Of this total, 115.7 square miles [299.7 km²] is land, with the balance (2.43%) being water (3.18 square miles [8.2 km²]).
While generally coinciding with the GPS location (latitude/longitude) of Omaha, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Omaha.
For the 2010 Census, the location was given as:
Lat: 41.264675° (or 41°15'52" N) [Map]
For the 2000 Census, the location given was:
Lat: 41.260482° (or 41°15'37" N) [Map]
The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 8,076 feet to the west<6> of the location that was used in the 2000 Census.
The U.S. Geological Survey (USGS) and the U.S. Board on Geographic Names (BGN) have assigned a unique GNIS identifier (#2396064) to Omaha. This identifier also marks a GSP point on the map, and that point lies within the boundaries of Omaha. The GNIS point has been mapped to the latitude/longitude:
Lat: 41.263861° (or 41°15'49" N) [Map]
The GSP location given for the 2010 Census lies 3,702 feet to the west<7> of the point given by the GNIS for Omaha. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Omaha.
Miscellaneous Information for Omaha ...
The Federal government has assigned various identifying codes to each community, county and state. At one time or another, the US Census Bureau has used one (or more) of the following identifiers when referring to either Douglas County or the city of Omaha:
The GNIS Codes ...
The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Omaha:
GNIS ID for Omaha: 2396064
The FIPS Codes ...
An earlier (and largely obsolete) identification method was called the Federal Information Processing Standard (FIPS):
State Code: 31 (Nebraska)
County Code: 055 (Douglas County)
Place Code: 37000 (Omaha)
Misc. Census Codes ...
Omaha is located in Census Region #2 (the Midwest Region) and Division #4 (the West North-Central Division).
US Postal Service ZIP Codes ...
While some people have used ZIP codes to identify a community, the ZIP codes were actually created to make mail delivery more efficient by grouping addresses together. Although a ZIP Code doesn't specifically identify a city like Omaha, they do identify addresses that are in (or near) the city. It's important to remember that the boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes.
Our list of ZIP codes for Omaha :
68046, 68102, 68103, 68104, 68105, 68106, 68107, 68108, 68109, 68110, 68111, 68112, 68113, 68116, 68117, 68118, 68119, 68122, 68124, 68127, 68130, 68131, 68132, 68133, 68134, 68135, 68136, 68137, 68138, 68142, 68144, 68145, 68147, 68152, 68154, 68155, 68157, 68164, 68172, 68175, 68176, 68178, 68179, 68182, 68183, 68197 & 68198.<8>
Census ZCTA Codes ...
The US Census Bureau created statistical entities that they call ZIP Code Tabulation Areas (ZCTAs) and these ZCTAs are frequently confused with the ZIP codes that come from the US Postal Service (USPS).
ZCTAs were first created for the 2000 Census and at that time, they were based upon the USPS ZIP codes. While largely covering the same areas, the boundaries of a ZCTA do not necessarily match the boundaries of a postal ZIP code with the same number. For example, while a postal ZIP code can cross a county or state line, a Census ZCTA can not. They should be treated as separate entities with no correlation between them.
For more information about the various Federal identification codes, please visit our Misc Page for Omaha.
Other Roadside Stops ...
Off-the-Road Links ...
The official website of the U.S. Census Bureau
The official website for Omaha: www.cityofomaha.org/
The official website for Douglas County: www.co.douglas.ne.us/
The official website for State of Nebraska: www.nebraska.gov/
The official website of the U.S. Board on Geographic Names (BGN)
The official website of the U.S. Geological Survey (USGS)
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This page was last modified: 11 Mar 2019