06443 ZIP Code, Madison, CT

06443 is a ZIP code in Madison, Connecticut in New Haven County. It covers 36 square miles of land. The closest ZIP codes are 06419, 06437 and 06413. 17,657 people live here in 7,020 households. With about 488 people per square mile it is lightly settled, and most homes are owner-occupied (90%). Median household income is $168,462, well above the Connecticut median of $95,781; the median age is 51.8, older than most ZIP codes.

Quick facts

Key figures

MeasureValue
Residents17,657
Households7,020
Median household income$168,462
Income per person$86,173
Median age51.8
Homeowners90.4%
Median home value$584,900
Median rent$2,025
Bachelor's degree or higher72.5%
Average commute (minutes)29.8
Households with kids under 1825.3%
Moved in the past year7.9%
Below the poverty line3.6%
Broadband internet97.5%
Speak a non-English language at home8.5%

Household income

% of householdsValue
<$10K3.6%
$10–15K1.3%
$15–25K3.8%
$25–35K2.7%
$35–50K2.6%
$50–75K5.3%
$75–100K11.4%
$100–150K12.5%
$150–200K16.9%
$200K+40.0%

Age

% of all residentsValue
<108.6%
10–1911.3%
20–244.5%
25–346.4%
35–4410.2%
45–5414.0%
55–6419.7%
65–7416.0%
75+9.1%

Tenure

% of housing unitsValue
Owned, with mortgage54.1%
Owned outright26.1%
Rented8.3%
Vacant11.6%

Type of building

% of housing unitsValue
Detached house91.5%
Townhome3.3%
2–4 units2.7%
5–19 units1.2%
20+ units1.2%
Mobile / other0.0%

Businesses in 06443

517 business establishments with 4,682 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

06443 has 15 USPS carrier routes with 7,884 residential and 556 business mailboxes. Open the EDDM route map.

Carrier routes in 06443

06443 has 15 USPS carrier routes (15 rural (R)) with 7,884 residential and 556 business mailboxes. Routes range from 428 homes (R038) to 680 homes (R030); the median route has 511 homes. The Census counted 7,020 households in 06443 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4997
500–7498
750–9990
1,000–1,4990
1,500+0

Best routes in 06443 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route R037 — USPS business mailboxes 234, 458 homes
  2. Route R033 — USPS business mailboxes 98, 491 homes
  3. Route R030 — USPS business mailboxes 56, 680 homes
  4. Route R038 — USPS business mailboxes 49, 428 homes
  5. Route R032 — USPS business mailboxes 40, 612 homes

Select these 5 routes on the route map

Every carrier route in 06443

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R021Rural4784$88,805———
R022Rural5110$200,001+———
R024Rural4762$143,615———
R025Rural5271$200,001+———
R026Rural4857$200,001+———
R027Rural57926$85,582———
R028Rural5331$173,781———
R030Rural68056$103,248———
R032Rural61240$200,001+———
R033Rural49198$200,001+———
R034Rural54314$185,387———
R035Rural5997$126,506———
R036Rural48417$200,001+———
R037Rural458234$126,506———
R038Rural42849$126,506———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 06443 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

Areas that include 06443

Where it ranks

Mail every home in 06443

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 06443, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 06443 in?
06443 is a Madison, CT mailing address. By land area, 6% lies inside Madison Center; the rest is outside any Census-defined city or community.
What county is 06443 in?
06443 is in New Haven County.
What is the population of 06443?
About 17,657 people (±74), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,713.
What is the median household income in 06443?
$168,462 (±$15,316), compared with $95,781 for Connecticut as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 06443?
15 USPS carrier routes with 7,884 residential and 556 business mailboxes (8,443 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 06443?
The closest, measured center to center: 06419 (3.2 mi), 06437 (3.9 mi, Guilford Center), 06413 (6 mi, Clinton), 06471 (7.7 mi), 06417 (7.8 mi, Deep River Center) and 06498 (8.1 mi, Westbrook Center).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.