What city is 18651 in?

18651 is a Plymouth, PA mailing address. By land area, 25% lies inside Larksville and 9% lies inside Plymouth; the rest is outside any Census-defined city or community.

What is the population of 18651?

About 8,703 people (±455), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 8,723.

What is the median household income in 18651?

$41,990 (±$7,062), compared with $77,971 for Pennsylvania as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 18651?

8 USPS carrier routes with 4,055 residential and 165 business mailboxes (4,220 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 18651?

The closest, measured center to center: 18708 (2.9 mi, Chase), 18704 (3.7 mi, Swoyersville borough, PA), 18701 (3.9 mi, Wilkes-Barre), 18709 (4 mi, Luzerne borough, PA), 18706 (4.2 mi, Laurel Run borough, PA) and 18627 (5.3 mi).

18651 ZIP Code, Plymouth, PA

18651 is a ZIP code in Plymouth, Pennsylvania in Luzerne County. It covers 12 square miles of land. The closest ZIP codes are 18708, 18704 and 18701. 8,703 people live here in 3,514 households. With about 722 people per square mile it is lightly settled, and owners and renters are mixed (56% own). Median household income is $41,990, well below the Pennsylvania median of $77,971.

Quick facts

Mailing city: Plymouth, PA
County: Luzerne County
Land area: 12 sq mi
Population: 8,703
Median household income: $41,990
Carrier routes: 8 (4,055 homes)

Key figures

Measure	Value
Residents	8,703
Households	3,514
Median household income	$41,990
Income per person	$28,955
Median age	40.1
Homeowners	56.2%
Median home value	$97,600
Median rent	$951
Bachelor's degree or higher	10.2%
Average commute (minutes)	23.9
Households with kids under 18	29.7%
Moved in the past year	11.7%
Below the poverty line	20.6%
Broadband internet	78.1%
Speak a non-English language at home	10.5%

Household income

% of households	Value
<$10K	5.5%
$10–15K	7.1%
$15–25K	11.2%
$25–35K	16.0%
$35–50K	17.0%
$50–75K	14.0%
$75–100K	9.8%
$100–150K	10.5%
$150–200K	6.5%
$200K+	2.4%

Age

% of all residents	Value
<10	15.2%
10–19	13.2%
20–24	5.4%
25–34	10.6%
35–44	10.5%
45–54	13.6%
55–64	14.1%
65–74	9.3%
75+	8.1%

Tenure

% of housing units	Value
Owned, with mortgage	21.8%
Owned outright	24.9%
Rented	35.5%
Vacant	17.8%

Type of building

% of housing units	Value
Detached house	51.8%
Townhome	23.7%
2–4 units	12.2%
5–19 units	6.4%
20+ units	2.9%
Mobile / other	3.0%

Businesses in 18651

104 business establishments with 1,088 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 25
Health Care and Social Assistance: 17
Other Services (except Public Administration): 17
Construction: 10
Accommodation and Food Services: 9
Administrative and Support and Waste Management and Remediation Services: 7
Manufacturing: 4
Wholesale Trade: 4

EDDM carrier routes

18651 has 8 USPS carrier routes with 4,055 residential and 165 business mailboxes. Open the EDDM route map.

Carrier routes in 18651

18651 has 8 USPS carrier routes (7 city (C), 1 rural (R)) with 4,055 residential and 165 business mailboxes. Routes range from 190 homes (C006) to 648 homes (C001); the median route has 538 homes. The Census counted 3,514 households in 18651 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	3
500–749	4
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 18651 for…

Most businesses

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

Route C008 — USPS business mailboxes 72, 577 homes
Route C009 — USPS business mailboxes 45, 638 homes
Route R001 — USPS business mailboxes 12, 422 homes
Route C005 — USPS business mailboxes 10, 488 homes
Route C007 — USPS business mailboxes 9, 498 homes

Select these 5 routes on the route map

Every carrier route in 18651

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	648	6	$52,047	—	—	—
C004	City	594	7	$55,030	—	—	—
C005	City	488	10	$41,502	—	—	—
C006	City	190	4	$52,074	—	—	—
C007	City	498	9	$52,074	—	—	—
C008	City	577	72	$59,296	—	—	—
C009	City	638	45	$34,129	—	—	—
R001	Rural	422	12	$58,995	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 18651 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

18708 — Chase CDP, PA (2.9 mi)
18704 — Swoyersville borough, PA (3.7 mi)
18701 — Wilkes-Barre city, PA (3.9 mi)
18709 — Luzerne borough, PA (4 mi)
18706 — Laurel Run borough, PA (4.2 mi)
18627 (5.3 mi)
18634 — Nanticoke city, PA (5.8 mi)
18705 — Wilkes-Barre city, PA (6.2 mi)

Areas that include 18651

Where it ranks

Mail every home in 18651

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) 18651, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 18651 in?: 18651 is a Plymouth, PA mailing address. By land area, 25% lies inside Larksville and 9% lies inside Plymouth; the rest is outside any Census-defined city or community.
What county is 18651 in?: 18651 is in Luzerne County.
What is the population of 18651?: About 8,703 people (±455), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 8,723.
What is the median household income in 18651?: $41,990 (±$7,062), compared with $77,971 for Pennsylvania as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 18651?: 8 USPS carrier routes with 4,055 residential and 165 business mailboxes (4,220 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 18651?: The closest, measured center to center: 18708 (2.9 mi, Chase), 18704 (3.7 mi, Swoyersville borough, PA), 18701 (3.9 mi, Wilkes-Barre), 18709 (4 mi, Luzerne borough, PA), 18706 (4.2 mi, Laurel Run borough, PA) and 18627 (5.3 mi).

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