13045 ZIP Code, Cortland, NY

13045 is a ZIP code in Cortland, New York — mostly in Cortland County (85% of its land), with smaller parts in Cayuga and Tompkins counties. It covers 108 square miles of land. The closest ZIP codes are 13738, 13102 and 13101. 28,361 people live here in 11,397 households. With about 263 people per square mile it is lightly settled, and owners and renters are mixed (58% own). Median household income is $69,961, below the New York median of $85,974; 20% of residents moved in during the past year.

Quick facts

Key figures

MeasureValue
Residents28,361
Households11,397
Median household income$69,961
Income per person$32,959
Median age32.9
Homeowners58.3%
Median home value$167,500
Median rent$981
Bachelor's degree or higher31.1%
Average commute (minutes)19
Households with kids under 1826.7%
Moved in the past year20.0%
Below the poverty line15.5%
Broadband internet88.4%
Speak a non-English language at home6.1%

Household income

% of householdsValue
<$10K6.3%
$10–15K4.9%
$15–25K8.6%
$25–35K5.6%
$35–50K9.9%
$50–75K18.0%
$75–100K15.1%
$100–150K19.7%
$150–200K5.3%
$200K+6.6%

Age

% of all residentsValue
<108.9%
10–1916.9%
20–2414.3%
25–3412.0%
35–4410.0%
45–5411.1%
55–6412.2%
65–748.9%
75+5.7%

Tenure

% of housing unitsValue
Owned, with mortgage32.7%
Owned outright21.4%
Rented37.5%
Vacant8.4%

Type of building

% of housing unitsValue
Detached house54.4%
Townhome2.2%
2–4 units22.4%
5–19 units11.8%
20+ units5.6%
Mobile / other3.6%

Businesses in 13045

700 business establishments with 12,306 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

13045 has 18 USPS carrier routes with 11,392 residential and 888 business mailboxes. Open the EDDM route map.

Carrier routes in 13045

13045 has 18 USPS carrier routes (12 city (C), 6 rural (R)) with 11,392 residential and 888 business mailboxes. Routes range from 455 homes (C003) to 885 homes (C002); the median route has 593 homes. The Census counted 11,397 households in 13045 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4992
500–74914
750–9992
1,000–1,4990
1,500+0

Best routes in 13045 for…

Most businesses

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

  1. Route C010 — USPS business mailboxes 146, 778 homes
  2. Route C002 — USPS business mailboxes 99, 885 homes
  3. Route C007 — USPS business mailboxes 72, 574 homes
  4. Route R006 — USPS business mailboxes 66, 539 homes
  5. Route R005 — USPS business mailboxes 65, 582 homes

Select these 5 routes on the route map

Every carrier route in 13045

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City72753$37,399———
C002City88599$56,098———
C003City45563$89,650———
C005City5434$77,737———
C007City57472$56,098———
C008City70150$44,368———
C010City778146$98,936———
C015City58432$72,445———
C019City58713$92,271———
C021City74427$62,313———
C022City73064$60,831———
C024City64562$50,208———
R001Rural48239$56,064———
R002Rural59911$80,487———
R003Rural66519$88,708———
R004Rural5723$90,185———
R005Rural58265$78,421———
R006Rural53966$60,978———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 13045 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 13045

Where it ranks

Mail every home in 13045

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) 13045, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 13045 in?
13045 is a Cortland, NY mailing address. By land area, 5% lies inside Cortland West, 4% lies inside Cortland, 2% lies inside Munsons Corners and 2% lies inside Blodgett Mills; the rest is outside any Census-defined city or community.
What county is 13045 in?
13045 is mostly in Cortland County (85% of its land), with smaller parts in Cayuga and Tompkins counties.
What is the population of 13045?
About 28,361 people (±682), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 28,406.
What is the median household income in 13045?
$69,961 (±$4,861), 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 13045?
18 USPS carrier routes with 11,392 residential and 888 business mailboxes (12,280 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 13045?
The closest, measured center to center: 13738 (3.9 mi, Blodgett Mills), 13102 (5.7 mi, McLean), 13101 (6.6 mi, McGraw), 13087 (7.8 mi), 13053 (8.2 mi, Dryden) and 13073 (10 mi, Groton).

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