Census Data for Ridgefield ...
The most recent Census Estimate<1> was for 2019 and it gave Ridgefield a population of 24,959 people.
The last Decennial Census<2> was in 2010, which gave Ridgefield a population of 24,638 people.
The community of Ridgefield is located in Fairfield County. The 2010 Census gave Fairfield County; a population of 916,829 people. This means that Ridgefield had 2.69% of the county's total population, making it Fairfield's 17th most populous community.
At the same time, Connecticut had a population of 3,574,097 people, meaning that Ridgefield had 0.69% of the total population of Connecticut - making it the state's 64th most populous community.
The 2010 Census shows that the sampling area for Ridgefield has a total area of 35.02 square miles [90.7 km²]. Of this total, 34.52 square miles [89.4 km²] is land, with the balance (1.44%) being water (0.5 square miles [1.3 km²]).
Fairfield County has a land area of 624 square miles [1,618.5 km²]. At 34.52 square miles [89.4 km²], Ridgefield has 5.52% of the county's total land area.
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- When the Census Bureau conducts a census for a community like Ridgefield, they draw a boundary around the area in which they are going to conduct their count - this defines the sampling area (usually a polygon). The shape of the sampling area can be quite complex and it's important to keep in mind that the boundaries of the sampling area may or may not match the recognized boundaries of the community.
- Things like population, area and housing for Ridgefield reflect the sampling area. Since the shape of the sampling area and the actual boundaries of Ridgefield might be different, it's best to check with the U.S. Census Bureau to resolve any difference between the two.
- Not only does the sampling area define boundaries, it also has a GPS location (latitude & longitude) that indicates a point within the sampling area (usually the center of the polygon, known as the centroid). At the time of the 2010 Census, the sampling area was located at:
- Lat: 41° 18' 22" (or 41.31°)
- Lon: -73° 30' 3" (or -73.5°)
- More information on this topic and the changes between the 2000 Census and the 2010 Census can be found in the section for our Census-to-Census Observations ... (see below).
Housing Units ...
At the time of the 2010 Census, Ridgefield had 9,420 Housing Units<3> and with its population of 24,638 people, this averages 2.62 people per Housing Unit.
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- The 2010 Census shows Ridgefield had a land area of 34.52 square miles [89.4 km²]. This translates to 269 Housing Units per square mile [103.9 housing units/km²].
- From the Census of 2000: Ridgefield had 8,877 Housing Units, a population of 23,643 people and a land area of 34.43 square miles [89.2 km²]. This gives a density of 2.66 people per Housing Unit and 253.9 Housing Units per square mile [98 housing units/km²].
- Note: Repeating the caution above (under Population Density), be aware that when comparing Housing Units between the 2010 Census and the 2000 Census, there were changes in the sampling area for Ridgefield and you need to be careful when comparing values between the censuses. More information about these differences can be found in the section called Census-to-Census Observations ... (see below).
Fairfield County ...
The community of Ridgefield is located in Fairfield County<4>.
The county had a population of 916,829 people at the 2010 Census. With it's population of 24,638 people, Ridgefield represented 2.69% of the county's total.
In addition, where the community of Ridgefield has a population density of 703 people per square mile [271.6 people/km²], Fairfield County averages 1,467 people per square mile [566 people/km²].
For more information, please visit our Census Page for Fairfield County.
Census-to-Census Observations ...
When the Census Bureau takes a census count (or enumeration) for Ridgefield, they start by specifying the boundaries of the area to be counted. This area (or sampling area) is a polygon and its shape can be quite complex - it may or may not match the geographical boundaries of Ridgefield. It's important to note that from one Census to the next, the shape and location of the polygon can change.
- Continue Reading ...
- Although we don't have specific information about the shape of the polygon for Ridgefield or how it changed has over time, there is some information that can give us some hints. For example, since the shape of the sampling area is directly related to the shape of the polygon, any change to area probably indicates a new shape for the polygon.
- If you need precision or details about the methodology of the Census, you should visit the U.S. Census Bureau for a definitive answer.
While generally coinciding with the GPS location (latitude/longitude) of Ridgefield, the latitude and longitude given by the Census Bureau actually indicates the GPS location of the polygon for Ridgefield.
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- For the 2010 Census, the location was given as:
- Lat: 41.306249° (or 41°18'22" N)
- Lon: -73.501019° (or -73°30'3" W)
- For the 2000 Census, the location given was:
- Lat: 41.297911° (or 41°17'52" N)
- Lon: -73.491788° (or -73°29'30" W)
- The difference indicates that the U.S. Census Bureau moved the location of the polygon for the 2010 Census 3,953 feet to the northwest<5> of the location that was used in the 2000 Census.
- The U.S. Geological Survey (USGS) and the U.S. Board on Geographic Names (BGN) have assigned a unique GNIS identifier (#213496) to Ridgefield. This identifier also marks a GPS point on the map, and that point lies within the boundaries of Ridgefield. The GNIS point has been mapped to the latitude/longitude:
- Lat: 41.305373° (or 41°18'19" N)
- Lon: -73.501513° (or -73°30'5" W)
- The GPS location given for the 2010 Census lies 346.9 feet to the north<6> of the point given by the GNIS for Ridgefield. For more information about this and the relationship of the various Federal Codes, please visit our Misc Page for Ridgefield.
Miscellaneous Information for Ridgefield ...
The Federal government has assigned various identifying codes to each community, county and state. At one time or another, the US Census Bureau has used one (or more) of the following identifiers when referring to either Fairfield County or the community of Ridgefield:
- The GNIS Codes ...
- The current system of identification is called the Geographic Names Information System (GNIS). The following GNIS codes relate to Ridgefield:
- GNIS ID for Ridgefield: 213496
- GNIS ID for Fairfield County: 212794
- GNIS ID for State of Connecticut: 1779780
- Misc. Census Codes ...
- Ridgefield is located in Census Region #1 (the Northeast Region) and Division #1 (the New England Division).
For more information about the various Federal identification codes, please visit our Misc Page for Ridgefield.
Other Roadside Stops ...
Find a Community within Connecticut
About Fairfield County
Off-the-Road Links ...
Unfortunately, we don't know of a website for Ridgefield. If you can help, please contact us through our Feedback Page.
The official website for State of Connecticut: https://portal.ct.gov/
The official website of the U.S. Census Bureau
The official website of the U.S. Board on Geographic Names (BGN)
The official website of the U.S. Geological Survey (USGS)
|<1>||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.|
|<2>||Every 10 years (eg- 1990, 2000, 2010), the US Census Bureau conducts a Constitutionally-mandated count (or enumeration) of people living within the United States. This count is called a Decennial Census. The last Decennial Census was the 2010 Census, with the next one planned for 2020.|
|<3>||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).|
|<4>||If you're interested in how the shape of Connecticut's counties, including Fairfield, have changed over time, we recommend the Atlas of Historical County Boundaries.|
|<5>||The calculated bearing (or angle) to the 2010 Census location is 39 degrees and a distance of 3,953 feet.|
|<6>||The calculated bearing (or angle) to the GNIS point is 337 degrees and a distance of 346.9 feet.|