What city is 18036 in?

18036 is a Coopersburg, PA mailing address. By land area, 3% lies inside Coopersburg; the rest is outside any Census-defined city or community.

What is the population of 18036?

About 15,581 people (±949), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 14,084.

What is the median household income in 18036?

$129,123 (±$9,936), 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 18036?

11 USPS carrier routes with 5,856 residential and 150 business mailboxes (6,006 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 18036?

The closest, measured center to center: 18034 (2.7 mi, DeSales University), 18951 (4.1 mi, Quakertown borough, PA), 18955 (4.5 mi, Richlandtown borough, PA), 18935 (5.3 mi, Milford Square), 18049 (5.4 mi, Emmaus borough, PA) and 18015 (5.5 mi, Bethlehem).

18036 ZIP Code, Coopersburg, PA

Q: What county is 18036 in?

18036 is mostly in Lehigh County (62% of its land), with smaller parts in Bucks County.

18036 is a ZIP code in Coopersburg, Pennsylvania — mostly in Lehigh County (62% of its land), with smaller parts in Bucks County. It covers 29 square miles of land. The closest ZIP codes are 18034, 18951 and 18955. 15,581 people live here in 6,009 households. With about 534 people per square mile it is lightly settled, and most homes are owner-occupied (89%). Median household income is $129,123, well above the Pennsylvania median of $77,971; the median age is 47.0, older than most ZIP codes.

Quick facts

Mailing city: Coopersburg, PA
County: Lehigh County
Land area: 29 sq mi
Population: 15,581
Median household income: $129,123
Carrier routes: 11 (5,856 homes)

Key figures

Measure	Value
Residents	15,581
Households	6,009
Median household income	$129,123
Income per person	$66,527
Median age	47
Homeowners	88.9%
Median home value	$416,200
Median rent	$1,342
Bachelor's degree or higher	46.0%
Average commute (minutes)	29.9
Households with kids under 18	30.8%
Moved in the past year	5.7%
Below the poverty line	2.6%
Broadband internet	94.7%
Speak a non-English language at home	5.1%

Household income

% of households	Value
<$10K	1.4%
$10–15K	0.9%
$15–25K	3.6%
$25–35K	4.9%
$35–50K	4.5%
$50–75K	9.0%
$75–100K	12.0%
$100–150K	21.9%
$150–200K	13.5%
$200K+	28.3%

Age

% of all residents	Value
<10	11.3%
10–19	11.4%
20–24	3.1%
25–34	9.5%
35–44	12.9%
45–54	12.4%
55–64	17.4%
65–74	14.0%
75+	8.0%

Tenure

% of housing units	Value
Owned, with mortgage	58.7%
Owned outright	28.6%
Rented	10.5%
Vacant	2.2%

Type of building

% of housing units	Value
Detached house	87.2%
Townhome	7.0%
2–4 units	3.2%
5–19 units	0.9%
20+ units	1.6%
Mobile / other	0.1%

Businesses in 18036

271 business establishments with 4,048 employees (ZIP Codes Business Patterns 2023).

Construction: 52
Other Services (except Public Administration): 37
Professional, Scientific, and Technical Services: 28
Retail Trade: 27
Administrative and Support and Waste Management and Remediation Services: 24
Accommodation and Food Services: 17
Finance and Insurance: 16
Wholesale Trade: 15

EDDM carrier routes

18036 has 11 USPS carrier routes with 5,856 residential and 150 business mailboxes. Open the EDDM route map.

Carrier routes in 18036

18036 has 11 USPS carrier routes (5 city (C), 6 rural (R)) with 5,856 residential and 150 business mailboxes. Routes range from 213 homes (C005) to 846 homes (C002); the median route has 545 homes. The Census counted 6,009 households in 18036 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	1
500–749	8
750–999	1
1,000–1,499	0
1,500+	0

Best routes in 18036 for…

Most businesses

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

Route C002 — USPS business mailboxes 49, 846 homes
Route C003 — USPS business mailboxes 35, 522 homes
Route C005 — USPS business mailboxes 33, 213 homes
Route C001 — USPS business mailboxes 13, 545 homes
Route R001 — USPS business mailboxes 8, 565 homes

Select these 5 routes on the route map

Every carrier route in 18036

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	545	13	$74,286	—	—	—
C002	City	846	49	$158,186	—	—	—
C003	City	522	35	$58,590	—	—	—
C004	City	606	1	$192,744	—	—	—
C005	City	213	33	$58,590	—	—	—
R001	Rural	565	8	$132,226	—	—	—
R002	Rural	520	2	$76,389	—	—	—
R003	Rural	585	6	$127,276	—	—	—
R004	Rural	627	1	$124,413	—	—	—
R005	Rural	545	2	$158,186	—	—	—
R006	Rural	282	0	$149,351	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 18036 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

18034 — DeSales University CDP, PA (2.7 mi)
18951 — Quakertown borough, PA (4.1 mi)
18955 — Richlandtown borough, PA (4.5 mi)
18935 — Milford Square CDP, PA (5.3 mi)
18049 — Emmaus borough, PA (5.4 mi)
18015 — Bethlehem city, PA (5.5 mi)
18970 — Trumbauersville borough, PA (6.7 mi)
18081 (6.8 mi)

Areas that include 18036

Where it ranks

Mail every home in 18036

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) 18036, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 18036 in?: 18036 is a Coopersburg, PA mailing address. By land area, 3% lies inside Coopersburg; the rest is outside any Census-defined city or community.
What county is 18036 in?: 18036 is mostly in Lehigh County (62% of its land), with smaller parts in Bucks County.
What is the population of 18036?: About 15,581 people (±949), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 14,084.
What is the median household income in 18036?: $129,123 (±$9,936), 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 18036?: 11 USPS carrier routes with 5,856 residential and 150 business mailboxes (6,006 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 18036?: The closest, measured center to center: 18034 (2.7 mi, DeSales University), 18951 (4.1 mi, Quakertown borough, PA), 18955 (4.5 mi, Richlandtown borough, PA), 18935 (5.3 mi, Milford Square), 18049 (5.4 mi, Emmaus borough, PA) and 18015 (5.5 mi, Bethlehem).

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