13601 ZIP Code, Watertown, NY

13601 is a ZIP code in Watertown, New York — mostly in Jefferson County (94% of its land), with smaller parts in Lewis County. It covers 141 square miles of land. The closest ZIP codes are 13615, 13616 and 13603. 36,839 people live here in 16,663 households, more than in 9 of every 10 New York ZIP codes. With about 262 people per square mile it is lightly settled, and owners and renters are mixed (49% own). Median household income is $58,791, below the New York median of $85,974.

Quick facts

Key figures

MeasureValue
Residents36,839
Households16,663
Median household income$58,791
Income per person$34,835
Median age35.7
Homeowners48.6%
Median home value$172,600
Median rent$1,011
Bachelor's degree or higher26.2%
Average commute (minutes)18.1
Households with kids under 1826.6%
Moved in the past year18.2%
Below the poverty line16.6%
Broadband internet89.3%
Speak a non-English language at home6.6%

Household income

% of householdsValue
<$10K4.8%
$10–15K5.4%
$15–25K8.9%
$25–35K9.5%
$35–50K14.5%
$50–75K18.2%
$75–100K12.6%
$100–150K15.5%
$150–200K5.0%
$200K+5.7%

Age

% of all residentsValue
<1013.8%
10–1911.9%
20–246.6%
25–3416.7%
35–4412.8%
45–5411.5%
55–6411.1%
65–749.0%
75+6.6%

Tenure

% of housing unitsValue
Owned, with mortgage28.7%
Owned outright15.1%
Rented45.2%
Vacant11.0%

Type of building

% of housing unitsValue
Detached house51.2%
Townhome3.4%
2–4 units21.4%
5–19 units10.6%
20+ units10.0%
Mobile / other3.4%

Businesses in 13601

1,162 business establishments with 19,343 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

13601 has 33 USPS carrier routes with 16,863 residential and 1,536 business mailboxes. Open the EDDM route map.

Carrier routes in 13601

13601 has 33 USPS carrier routes (24 city (C), 9 rural (R)) with 16,863 residential and 1,536 business mailboxes. Routes range from 55 homes (C005) to 822 homes (C014); the median route has 525 homes. The Census counted 16,663 households in 13601 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–49913
500–74918
750–9991
1,000–1,4990
1,500+0

Best routes in 13601 for…

Most businesses

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

  1. Route C005 — USPS business mailboxes 165, 55 homes
  2. Route C027 — USPS business mailboxes 139, 388 homes
  3. Route C008 — USPS business mailboxes 133, 387 homes
  4. Route C014 — USPS business mailboxes 106, 822 homes
  5. Route C012 — USPS business mailboxes 106, 574 homes

Select these 5 routes on the route map

Every carrier route in 13601

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City5692$50,348———
C002City61642$57,921———
C004City55622$63,541———
C005City55165$50,225———
C006City61183$16,024———
C008City387133$50,225———
C010City40950$37,636———
C011City57918$33,471———
C012City574106$23,810———
C013City69161$109,082———
C014City822106$16,024———
C015City5419$57,921———
C016City52544$26,438———
C017City47129$50,225———
C019City46319$58,801———
C020City61410$14,588———
C021City48322$14,588———
C022City5093$61,739———
C023City62112$61,739———
C024City2834$82,438———
C025City29922$82,438———
C026City4641$76,151———
C027City388139$75,438———
C028City70534$37,636———
R001Rural50936$100,919———
R002Rural45520$85,834———
R003Rural57245$50,348———
R004Rural54722$85,834———
R005Rural69349$14,588———
R006Rural44957$78,030———
R007Rural43577$50,348———
R008Rural70581$75,438———
R009Rural26313$84,358———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 13601 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 13601

Where it ranks

Mail every home in 13601

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) 13601, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 13601 in?
13601 is a Watertown, NY mailing address. By land area, 6% lies inside Watertown; the rest is outside any Census-defined city or community.
What county is 13601 in?
13601 is mostly in Jefferson County (94% of its land), with smaller parts in Lewis County.
What is the population of 13601?
About 36,839 people (±650), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 37,287.
What is the median household income in 13601?
$58,791 (±$3,893), compared with $85,974 for New York as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 13601?
33 USPS carrier routes with 16,863 residential and 1,536 business mailboxes (18,396 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 13601?
The closest, measured center to center: 13615 (4.4 mi, Brownville), 13616 (5 mi, Calcium), 13603 (6.8 mi, Fort Drum), 13612 (7.1 mi, Black River), 13638 (8.5 mi, Felts Mills) and 13606 (8.6 mi, Adams Center).

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