Glynn County Geographic Information Systems (GIS)

What is GIS?

A geographic information system (GIS) is a framework for gathering, managing, and analyzing data. Rooted in the science of geography, GIS integrates many types of data. It analyzes spatial location and organizes layers of information into visualizations using maps and 3D scenes. With this unique capability, GIS reveals deeper insights into data, such as patterns, relationships, and situations—helping users make smarter decisions.

What is a Recorded Plat?

A survey diagram, drawn to scale, of the legal boundaries and divisions of a tract of land. In Glynn County a plat is drawn by a registered surveyor or engineer and recorded in public records.

What is a Parcel?

Any quantity of land capable of being described with such definiteness that its locations and boundaries may be established, defined by a series of measured straight or curved lines that connect to form a polygon.

What is GPS?

(Global Positioning System). A system of radio-emitting and radio-receiving satellites used for determining positions on the earth. The orbiting satellites transmit signals that allow a GPS receiver anywhere on earth to calculate its own location through trilateration. Developed and operated by the U.S. Department of Defense, the system is used in navigation, mapping, surveying, and other applications in which precise positioning is necessary.

Glynn County GeoFacts:


Glynn County is comprised of 541 square miles, with 25 square miles within the City of Brunswick limits.

250 square miles of Glynn County is Upland, 166 square miles is categorized as marsh, while 125 square miles of the county are water bodies.

There are 1544 miles of road in Glynn County with the County maintaining more than 500 miles of roads including 480 miles of paved roads.

There are 105 miles of railroad in Glynn County.

There are currently 183 miles of paved sidewalks and 40 miles of unpaved trails in Glynn County.

The City of Brunswick is comprised of 25 square miles, with 7.5 square miles of upland, 9 square miles of marsh, and 8.5 square miles of open water.


Glynn County GIS maintains around 64,000 addresses and more than 43,000 parcels.

There are 6,986 parcels within the City of Brunswick.

Glynn County is divided into 1,413 Neighborhoods, Condos, Apartment Complexes, and Rural Areas.

Glynn County Maintains 34,000 drainage structures: ditches, pipes, inlets, and culverts.

There are 1200 miles of navigable waterways within Glynn County.

The Highest elevation in Glynn County is 68 feet (NAVD 1988) near the intersection of Old Post Road and Postal Way.

Some parcels in Glynn County are below sea level and a few currently exist underwater due to hurricane damage.


The Population of Glynn County is now more than 85,000 with 52 % Female residents and 48% Male.

The estimated population change over the last 9 years is + 7%.

 It is estimated that 20% of the population of Glynn County is older than 65, Higher than the national average of 16%. The median age for a Glynn County resident is 42.

The largest age cohort is now between 55 and 60 years old.

Glynn County is home to a 7.5% veteran population, higher than the national average of 5.5%.

The population density on upland (dry land) is 340 persons per square mile.

The City of Brunswick currently has a population of 16,357.


There are 34,777 households in Glynn County with an average of 2.44 persons per household.

The median value of owner-occupied housing units is $168,700, lower than the national average of $204,900.

> 7.7% of households use a language other than English in the home.

There are 7,632 housing units in the City of Brunswick.


Glynn County is home to more than 40 public schools, private schools, college campuses, and pre-schools.

88% of Glynn County residents are high school graduates, higher than the national average of 87%.

30 % of Glynn County residents have received a bachelor’s degree which is lower than the national average of 31.5%.

Important Longitude and Latitude Points:

St. Simons Lighthouse: 31.1341° N, 81.3935° W

Fort Frederica: 31°13′26″N 81°23′36″W

Sidney Lanier Bridge: ‎31°07′04″N 81°29′06″W

Brunswick City Hall: 31.1500° N, 81.4915° W

Jekyll Island Club Hotel: ‎31°3′38″N 81°25′19″W

Published: February 1, 2020

Sources: United States Census Bureau & Glynn County GIS