Married Couple (% of all Households) by Zip Code (ZCTA5) — Connecticut

NOTE: Gray indicates insufficient data or a suppressed estimate.

Zip codes in Connecticut's rural and suburban periphery—particularly in Litchfield County to the northwest and portions of Tolland and Windham counties to the northeast—tend to have married-couple household rates in the 60–80% range, while urban cores such as Hartford, New Haven, Bridgeport, and New London display markedly lower rates, often falling below 30–40%. A clear suburban ring pattern emerges around these cities, with adjacent zip codes transitioning sharply from deep purple/teal in city centers to green and yellow in surrounding towns. The southwestern Fairfield County coast presents notable intra-regional contrast, where affluent suburban zip codes with rates above 70% sit directly adjacent to Bridgeport-area codes registering among the state's lowest married-couple percentages.

Data: U.S. Census Bureau, 2023 ACS

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