06405 ZIP Code, Branford, CT

06405 is a ZIP code in Branford, Connecticut in New Haven County. It covers 22 square miles of land. The closest ZIP codes are 06471, 06512 and 06513. 28,217 people live here in 13,178 households. At about 1,305 people per square mile it has suburban density, and owners and renters are mixed (70% own). Median household income is $105,225, close to the Connecticut median of $95,781; the median age is 54.2, older than most ZIP codes.

Quick facts

Key figures

MeasureValue
Residents28,217
Households13,178
Median household income$105,225
Income per person$71,025
Median age54.2
Homeowners69.5%
Median home value$401,200
Median rent$1,565
Bachelor's degree or higher51.5%
Average commute (minutes)23.5
Households with kids under 1818.6%
Moved in the past year9.7%
Below the poverty line5.9%
Broadband internet93.6%
Speak a non-English language at home11.0%

Household income

% of householdsValue
<$10K3.1%
$10–15K1.6%
$15–25K5.8%
$25–35K5.2%
$35–50K7.3%
$50–75K13.5%
$75–100K10.8%
$100–150K19.4%
$150–200K14.7%
$200K+18.6%

Age

% of all residentsValue
<107.5%
10–198.6%
20–243.8%
25–3410.5%
35–449.0%
45–5411.8%
55–6418.7%
65–7417.9%
75+12.4%

Tenure

% of housing unitsValue
Owned, with mortgage40.3%
Owned outright24.7%
Rented27.6%
Vacant7.4%

Type of building

% of housing unitsValue
Detached house55.9%
Townhome12.4%
2–4 units14.5%
5–19 units9.6%
20+ units7.2%
Mobile / other0.4%

Businesses in 06405

964 business establishments with 12,979 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

06405 has 26 USPS carrier routes with 14,041 residential and 1,307 business mailboxes. Open the EDDM route map.

Carrier routes in 06405

06405 has 26 USPS carrier routes (26 city (C)) with 14,041 residential and 1,307 business mailboxes. Routes range from 166 homes (C031) to 854 homes (C034); the median route has 548 homes. The Census counted 13,178 households in 06405 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–4995
500–74918
750–9992
1,000–1,4990
1,500+0

Best routes in 06405 for…

Most businesses

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

  1. Route C031 — USPS business mailboxes 288, 166 homes
  2. Route C019 — USPS business mailboxes 131, 251 homes
  3. Route C018 — USPS business mailboxes 120, 629 homes
  4. Route C032 — USPS business mailboxes 120, 594 homes
  5. Route C015 — USPS business mailboxes 112, 512 homes

Select these 5 routes on the route map

Every carrier route in 06405

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C002City56265$62,520———
C003City5664$113,741———
C005City6108$89,512———
C007City5184$200,001+———
C008City56476$100,565———
C010City5218$114,136———
C011City43116$200,001+———
C012City7794$108,287———
C014City5310$103,083———
C015City512112$100,565———
C017City5314$107,312———
C018City629120$78,822———
C019City251131$123,595———
C020City5945$67,657———
C021City5066$141,604———
C025City6442$79,016———
C026City61788$79,016———
C027City5567$123,920———
C028City5390$108,287———
C029City4276$89,118———
C030City48435$78,822———
C031City166288$123,595———
C032City594120$141,604———
C034City85441$103,083———
C035City471107$80,545———
C037City58450$80,545———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 06405 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 06405

Where it ranks

Mail every home in 06405

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) 06405, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 06405 in?
06405 is a Branford, CT mailing address. By land area, 9% lies inside Branford Center; the rest is outside any Census-defined city or community.
What county is 06405 in?
06405 is in New Haven County.
What is the population of 06405?
About 28,217 people (±32), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 28,171.
What is the median household income in 06405?
$105,225 (±$6,607), 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 06405?
26 USPS carrier routes with 14,041 residential and 1,307 business mailboxes (15,350 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 06405?
The closest, measured center to center: 06471 (3.8 mi), 06512 (4.6 mi, East Haven), 06513 (5.1 mi, New Haven), 06437 (5.9 mi, Guilford Center), 06510 (7.5 mi, New Haven) and 06519 (7.6 mi, New Haven).

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