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Green Castle

Ghost town · Johnson County, Iowa

Cedar Rapids quadrangle, USGS topographic map (1887, 1:62,500)
Cedar Rapids quadrangle, USGS topographic map (1887, 1:62,500) · U.S. Geological Survey, Historical Topographic Map Collection · Public domain

Green Castle is a ghost town in Johnson County, Iowa. It is one of 5 former communities in Johnson County on the federal names register. That ranks the county 12th among the 79 Iowa counties with a vanished settlement on record.

The U.S. Geological Survey lists Green Castle as a historical populated place on the Swisher topographic quadrangle: the name is no longer in official use for a community, whether the settlement was abandoned, absorbed into a neighbouring town or renamed. The recorded location is 41.7745° N, 91.6663° W.

Key facts

USGS quadrangleSwisher
Elevation712 ft
Nearest living townNorth Liberty, IA
Distance to it3.5 miles
GNIS feature ID465429
Coordinates41.77446, -91.66628

Open the location on a map

What's there now

Green Castle is no longer a community in its own right. The nearest living town is North Liberty, IA (population 20,782), about 3.5 miles away in a straight line, and the site sits at roughly 712 feet above sea level. Much of the land around former townsites is private; check access before you visit.

Nearby places

Questions

Where is Green Castle?

Green Castle is in Johnson County, Iowa, at 41.7745, -91.6663.

How many ghost towns are in Johnson County?

Johnson County, Iowa has 5 ghost towns on record at Wayfarrow.

Sources and licences

Facts marked "approximately" carry an uncertain date in the source. Text on this page is generated from the sources above; no encyclopedia prose is copied. Last updated 2026-11-05.