CT · GEOID 09140

Naugatuck Valley Planning Region area

Naugatuck Valley Planning Region, Connecticut covers 421.6 square miles: 412.8 square miles of land and 8.8 square miles of water.

Official Census measurements2026 Gazetteer · retrieved September 27, 2026
Land area412.8 mi²
Water area8.8 mi²
Total area421.6 mi²
National land rank#2449

County outline

Generalized outline of Naugatuck Valley Planning Region, Connecticut
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Naugatuck Valley Planning Region is located

Naugatuck Valley Planning Region highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 97.9% of Naugatuck Valley Planning Region’s measured area and water for 2.1%. Its combined area converts to 1,091.9 square kilometers or approximately 269,803 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land412.7841,069.106264,181.8
Water8.78322.7485,621.1
Total421.5671,091.854269,802.9

How Naugatuck Valley Planning Region compares

By original Census land area, Naugatuck Valley Planning Region ranks #7 of 9 in Connecticut and #2449 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.776 times the Connecticut county-equivalent median of 532.1 square miles. It accounts for 8.5% of the combined county land area in the state.

See the complete Connecticut ranking · What counts as a county equivalent?

What stands out about Naugatuck Valley Planning Region?

Naugatuck Valley Planning Region has more land than 773 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Naugatuck Valley Planning Region412.8 mi²
Connecticut median532.1 mi²
National median604.5 mi²

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Naugatuck Valley Planning Region at #2,484 nationally by total area, 35 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 2.1%, compared with a national county-equivalent median of 1.2% — 0.9 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Naugatuck Valley Planning Region in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2448Issaquena County, Mississippi413Compare
#2449Naugatuck Valley Planning Region, Connecticut412.8This county
#2450Summit County, Ohio412.7Compare

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.

Representative coordinates

The Census internal point is 41.518931, -73.087906. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.

Source and precision

U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 1,069,106,349 m²; AWATER: 22,747,875 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How many acres of land are in Naugatuck Valley Planning Region?

The land measurement converts to approximately 264,182 acres. Including water, total area is approximately 269,803 acres. One square mile equals 640 acres.

Why might another source show a different area?

Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.

Can this establish a property boundary?

No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.

Cite this county

Download the complete CSV or JSON dataset