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Summary for Green Castle

So far, we found very little information about Green Castle. The little that we've found leads us believe that the community is historic.<1>

We've added Green Castle to our Gazetteer with the hope that we can develop more information. If you can help us with Green Castle, please Contact Us.

About Green Castle (Click for our profile page)

Our information shows that the community of Green Castle is historic. The information below applies to the area where Green Castle would have been located.

Time Zone: The area where Green Castle was located is in the Central Time Zone (CST/CDT)

Telephone Area Code: 319

Elevation: 710 feet [216.41 m] above sea level<2>

GPS Coordinates (Latitude/Longitude)<3>

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

Lat: 41.774500° (or 41°46'28" N)

Lon: -91.666300° (or -91°39'58" W)

USGS Topo Map: Swisher<4>

Federal GNIS/FIPS Codes for Green Castle

GNIS ID: 465429

FIPS State / Place Code: None

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

About Johnson County

The community of Iowa City is the County Seat for Johnson County.

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

Population

Year	Population
2019 Est:<5>	151,140 (15.08% increase since 2010)
2010	131,337 (18.32% increase since 2000)
2000:	111,006

Total Area:<6> 623 sq. miles [1,614 km²] - of which 1.46% is water (9.11 sq. miles [23.6 km²])

Housing Units: <7> 55,967

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

Federal GNIS/FIPS Codes for Johnson

GNIS ID: 465240

FIPS State / County Code: 19 / 103

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

About Iowa

From the US Census

Population

Year	Population
2019 Est:	3,159,596 (3.72% increase since 2010)
2010:	3,046,355 (4.1% increase since 2000)
2000:	2,926,324

Websites for State of Iowa

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

Tourism: https://www.traveliowa.com/

Parks: https://www.iowadnr.gov/

Fishing: https://www.iowadnr.gov/things-do/fishing

Hunting: https://www.iowadnr.gov/things-do/hunting-trapping

Federal GNIS/FIPS Codes for State of Iowa

GNIS ID: 1779785

FIPS State: 19

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

Footnotes ...

<1>	We use the term 'Historic' broadly and it generally means that the community no longer exists. However, it can also mean that the community might still exist, but was significantly larger or had a more 'official' existence in the past than it does now. Unfortunately our sources of data have proven to be unreliable. If you can provide us with more specific information about Green Castle, please let us know so that we can improve our accuracy.
<2>	The elevation is an estimate for the area around Green Castle - it will be higher in some places and lower in others.
<3>	Longitude & latitude values may not be the geographic center of Green Castle, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<4>	Name of the USGS 7.5 Minute topographic map which includes Green Castle.
<5>	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.
<6>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Green Castle. 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.
<7>	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).