Summary for Union
About Union (Click for our profile page)
Located in: Primarily Montgomery County (see below). A portion of Union extends into Miami County.
Time Zone: Union lies in the Eastern Time Zone (EST/EDT)
Telephone Area Code: (937)
ZIP Code: 45322<1>
Elevation: 790 feet [240.79 m] above sea level<2>
From the 2010 US Census (For more detail, see our Census Page for Union)
Population
| Year | Population |
| 2019 Est:<3> | 6,890 (7.34% increase since 2010) |
| 2010: | 6,419 (15.16% increase since 2000) |
| 2000: | 5,574 |
Total Area:<4> 1.18 sq. miles [3.1 km²] - of which 6.08% is water (0.07 sq. miles [0.2 km²])
Housing Units:<5> 15
Official Website: www.ci.union.oh.us/
GPS Coordinates (Latitude/Longitude)<6>
For the purpose of mapping and calculating distances, we have chosen the following reference point for Union:
Lat: 39.897700° (or 39°53'51" N)
Lon: -84.306300° (or -84°18'22" W)
USGS Topo Map: West Milton<7>
Federal GNIS/FIPS Codes for Union
GNIS ID: 2397084
FIPS State / Place Code: 39 / 78470
(For more about Federal Codes, see our Misc Page for Union)
About Montgomery County
The city of Dayton is the County Seat for Montgomery County.
From the 2010 US Census (For more detail, see our Census Page for Montgomery)
Population
| Year | Population |
| 2019 Est: | 532,139 (0.56% decrease since 2010) |
| 2010 | 535,153 (4.28% decrease since 2000) |
| 2000: | 559,062 |
Total Area: 464.3 sq. miles [1,202.6 km²]
Housing Units: 254,775
Official Website: www.co.montgomery.oh.us/
Federal GNIS/FIPS Codes for Montgomery
GNIS ID: 1074069
FIPS State / County Code: 39 / 113
(For more about Federal Codes, see our Misc Page for Union)
About Ohio
From the US Census
Population
| Year | Population |
| 2019 Est: | 11,696,507 (1.39% increase since 2010) |
| 2010: | 11,536,504 (1.62% increase since 2000) |
| 2000: | 11,353,140 |
Websites for State of Ohio
Official Website: https://ohio.gov/
Parks: parks.ohiodnr.gov/
Fishing & Hunting: ohiodnr.gov/
Federal GNIS/FIPS Codes for State of Ohio
GNIS ID: 1085497
FIPS State: 39
(For more about Federal Codes, see our Misc Page for Union)
Off-the-Road Links ...
The official website for Union: www.ci.union.oh.us/
The official website for Montgomery County: www.co.montgomery.oh.us/
The official website for State of Ohio: https://ohio.gov/
Footnotes ...
| <1> | ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a city (such as Union). When looking for a ZIP Code, whether Union or elsewhere, it's always best to check the website of the United States Postal Service (USPS). |
| <2> | The elevation is an estimate for the area around Union - it will be higher in some places and lower in others. |
| <3> | Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2019. |
| <4> | The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Union. The value given by the Census Bureau reflects their statistical (or sampling) requirements. For example, if there is a cluster of people living just outside of the community's official boundary, the Census-defined area might be expanded to include that group. |
| <5> | A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway). |
| <6> | Longitude & latitude values may not be the geographic center of Union, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source. |
| <7> | Name of the USGS 7.5 Minute topographic map which includes Union. |