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Summary for Callahan

About Callahan (Click for our profile page)

Located in: Nassau County (see below)

Time Zone: Callahan lies in the Eastern Time Zone (EST/EDT)

Telephone Area Codes: 904 & 324<1>

ZIP Code: 32011<2>

Elevation: Near sea level<3>

From the 2010 US Census (For more detail, see our Census Page for Callahan)

Population

Year	Population
2019 Est:<4>	1,342 (19.5% increase since 2010)
2010:	1,123 (16.74% increase since 2000)
2000:	962

Total Area:<5> 1.45 sq. miles [3.8 km²]

Housing Units:<6> 529

GPS Coordinates (Latitude/Longitude)<7>

For the purpose of mapping and calculating distances, we have chosen the following reference point for Callahan:

Lat: 30.561400° (or 30°33'41" N)

Lon: -81.830000° (or -81°49'47" W)

USGS Topo Map: Callahan<8>

Federal GNIS/FIPS Codes for Callahan

GNIS ID: 2405365

FIPS State / Place Code: 12 / 09700

(For more about Federal Codes, see our Misc Page for Callahan)

About Nassau County

The town of Fernandina Beach is the County Seat for {Nassau County}.

From the 2010 US Census (For more detail, see our Census Page for Nassau)

Population

Year	Population
2019 Est:	88,625 (20.56% increase since 2010)
2010	73,513 (27.49% increase since 2000)
2000:	57,663

Total Area: 725 sq. miles [1,880.1 km²] - of which 10.65% is water (77.3 sq. miles [200.2 km²])

Housing Units: 35,009

Official Website: https://www.nassaucountyfl.com/

Federal GNIS/FIPS Codes for Nassau

GNIS ID: 295730

FIPS State / County Code: 12 / 089

(For more about Federal Codes, see our Misc Page for Callahan)

About Florida

From the US Census

Population

Year	Population
2019 Est:	21,492,056 (14.31% increase since 2010)
2010:	18,801,310 (17.64% increase since 2000)
2000:	15,982,378

Websites for State of Florida

Official Website: https://www.myflorida.gov/

Tourism: https://www.visitflorida.com/

Parks: https://floridadep.gov/parks-rec-topics

Fishing: https://myfwc.com/fishing/

Hunting: https://myfwc.com/hunting/

Federal GNIS/FIPS Codes for State of Florida

GNIS ID: 294478

FIPS State: 12

(For more about Federal Codes, see our Misc Page for Callahan)

Footnotes ...

<1>	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 904 code has been Overlayed with the 324 area code. New phone numbers in the Callahan area will be assigned with one of these codes: 904 or 324. As a result, placing a call in the Callahan area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	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 town (such as Callahan). When looking for a ZIP Code, whether Callahan or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<3>	The elevation is an estimate for the area around Callahan - it will be higher in some places and lower in others.
<4>	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.
<5>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Callahan. 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.
<6>	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).
<7>	Longitude & latitude values may not be the geographic center of Callahan, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<8>	Name of the USGS 7.5 Minute topographic map which includes Callahan.