What city is 06355 in?

06355 is a Mystic, CT mailing address. By land area, 30% lies inside Old Mystic, 22% lies inside Mystic and 1% lies inside Noank; the rest is outside any Census-defined city or community.

What is the population of 06355?

About 12,173 people (±909), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 12,835.

What is the median household income in 06355?

$137,425 (±$13,176), 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 06355?

13 USPS carrier routes with 6,587 residential and 612 business mailboxes (7,200 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 06355?

The closest, measured center to center: 06378 (3.5 mi, Mystic), 06340 (3.6 mi, Conning Towers-Nautilus Park), 06339 (5.4 mi, Mashantucket), 06390 (5.7 mi, Fishers Island), 06379 (6.2 mi, Pawcatuck) and 06335 (6.5 mi, Gales Ferry).

06355 ZIP Code, Mystic, CT

06355 is a ZIP code in Mystic, Connecticut in New London County. It covers 14 square miles of land. The closest ZIP codes are 06378, 06340 and 06339. 12,173 people live here in 5,364 households. With about 858 people per square mile it is lightly settled, and most homes are owner-occupied (81%). Median household income is $137,425, above the Connecticut median of $95,781; the median age is 53.2, older than most ZIP codes.

Quick facts

Mailing city: Mystic, CT
County: New London County
Land area: 14 sq mi
Population: 12,173
Median household income: $137,425
Carrier routes: 13 (6,587 homes)

Key figures

Measure	Value
Residents	12,173
Households	5,364
Median household income	$137,425
Income per person	$73,122
Median age	53.2
Homeowners	81.0%
Median home value	$453,400
Median rent	$1,915
Bachelor's degree or higher	56.7%
Average commute (minutes)	22.5
Households with kids under 18	20.7%
Moved in the past year	12.2%
Below the poverty line	3.2%
Broadband internet	93.8%
Speak a non-English language at home	6.0%

Household income

% of households	Value
<$10K	2.1%
$10–15K	0.6%
$15–25K	2.0%
$25–35K	3.3%
$35–50K	6.0%
$50–75K	12.4%
$75–100K	8.7%
$100–150K	19.3%
$150–200K	21.3%
$200K+	24.3%

Age

% of all residents	Value
<10	8.0%
10–19	9.0%
20–24	3.8%
25–34	9.3%
35–44	9.9%
45–54	12.2%
55–64	16.8%
65–74	13.6%
75+	17.3%

Tenure

% of housing units	Value
Owned, with mortgage	38.1%
Owned outright	34.1%
Rented	16.5%
Vacant	11.3%

Type of building

% of housing units	Value
Detached house	77.1%
Townhome	5.1%
2–4 units	7.6%
5–19 units	1.2%
20+ units	6.7%
Mobile / other	2.3%

Businesses in 06355

481 business establishments with 6,126 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 91
Accommodation and Food Services: 91
Health Care and Social Assistance: 55
Other Services (except Public Administration): 50
Professional, Scientific, and Technical Services: 34
Construction: 33
Finance and Insurance: 33
Manufacturing: 19

EDDM carrier routes

06355 has 13 USPS carrier routes with 6,587 residential and 612 business mailboxes. Open the EDDM route map.

Carrier routes in 06355

06355 has 13 USPS carrier routes (9 city (C), 4 rural (R)) with 6,587 residential and 612 business mailboxes. Routes range from 400 homes (C003) to 637 homes (R004); the median route has 501 homes. The Census counted 5,364 households in 06355 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	6
500–749	7
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 06355 for…

Most businesses

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

Route C008 — USPS business mailboxes 149, 480 homes
Route C004 — USPS business mailboxes 108, 419 homes
Route C003 — USPS business mailboxes 91, 400 homes
Route C007 — USPS business mailboxes 74, 541 homes
Route C009 — USPS business mailboxes 60, 494 homes

Select these 5 routes on the route map

Every carrier route in 06355

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C003	City	400	91	$105,150	—	—	—
C004	City	419	108	$150,867	—	—	—
C005	City	497	0	$119,950	—	—	—
C006	City	504	3	$157,997	—	—	—
C007	City	541	74	$119,809	—	—	—
C008	City	480	149	$119,659	—	—	—
C009	City	494	60	$151,312	—	—	—
C010	City	501	13	$151,312	—	—	—
C011	City	460	3	$150,867	—	—	—
R001	Rural	561	5	$119,809	—	—	—
R002	Rural	583	53	$161,596	—	—	—
R003	Rural	510	40	$119,809	—	—	—
R004	Rural	637	13	$105,150	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 06355 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

06378 — Mystic CDP, CT (3.5 mi)
06340 — Conning Towers-Nautilus Park CDP, CT (3.6 mi)
06339 — Mashantucket CDP, CT (5.4 mi)
06390 — Fishers Island CDP, NY (5.7 mi)
06379 — Pawcatuck CDP, CT (6.2 mi)
06335 — Gales Ferry CDP, CT (6.5 mi)
06320 — New London city, CT (6.8 mi)
06338 — Mashantucket CDP, CT (6.8 mi)

Areas that include 06355

Mystic, CT ZIP codes — 2 ZIP codes
Old Mystic, CT ZIP codes — 1 ZIP code
Noank, CT ZIP codes — 2 ZIP codes
New London County ZIP codes — 33 ZIP codes
Connecticut ZIP code data

Where it ranks

Mail every home in 06355

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) 06355, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 06355 in?: 06355 is a Mystic, CT mailing address. By land area, 30% lies inside Old Mystic, 22% lies inside Mystic and 1% lies inside Noank; the rest is outside any Census-defined city or community.
What county is 06355 in?: 06355 is in New London County.
What is the population of 06355?: About 12,173 people (±909), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 12,835.
What is the median household income in 06355?: $137,425 (±$13,176), 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 06355?: 13 USPS carrier routes with 6,587 residential and 612 business mailboxes (7,200 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 06355?: The closest, measured center to center: 06378 (3.5 mi, Mystic), 06340 (3.6 mi, Conning Towers-Nautilus Park), 06339 (5.4 mi, Mashantucket), 06390 (5.7 mi, Fishers Island), 06379 (6.2 mi, Pawcatuck) and 06335 (6.5 mi, Gales Ferry).

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