42104 ZIP Code, Bowling Green, KY

42104 is a ZIP code in Bowling Green, Kentucky — mostly in Warren County (91% of its land), with smaller parts in Simpson County. It covers 58 square miles of land. The closest ZIP codes are 42122, 42170 and 42103. 42,076 people live here in 17,045 households, more than in 9 of every 10 Kentucky ZIP codes. With about 726 people per square mile it is lightly settled, and owners and renters are mixed (62% own). Median household income is $75,164, above the Kentucky median of $63,726.

Quick facts

Key figures

MeasureValue
Residents42,076
Households17,045
Median household income$75,164
Income per person$38,032
Median age37
Homeowners61.7%
Median home value$306,400
Median rent$1,029
Bachelor's degree or higher40.8%
Average commute (minutes)19.9
Households with kids under 1830.9%
Moved in the past year18.8%
Below the poverty line12.4%
Broadband internet93.4%
Speak a non-English language at home17.8%

Household income

% of householdsValue
<$10K6.2%
$10–15K1.9%
$15–25K6.6%
$25–35K7.3%
$35–50K11.9%
$50–75K16.1%
$75–100K15.3%
$100–150K18.7%
$150–200K7.8%
$200K+8.3%

Age

% of all residentsValue
<1011.4%
10–1914.6%
20–248.5%
25–3413.2%
35–4412.9%
45–5412.8%
55–6411.6%
65–747.9%
75+7.0%

Tenure

% of housing unitsValue
Owned, with mortgage37.0%
Owned outright22.5%
Rented36.1%
Vacant4.4%

Type of building

% of housing unitsValue
Detached house65.6%
Townhome3.3%
2–4 units11.2%
5–19 units10.8%
20+ units6.9%
Mobile / other2.2%

Businesses in 42104

944 business establishments with 15,315 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

42104 has 27 USPS carrier routes with 16,735 residential and 1,149 business mailboxes. Open the EDDM route map.

Carrier routes in 42104

42104 has 27 USPS carrier routes (11 city (C), 16 rural (R)) with 16,735 residential and 1,149 business mailboxes. Routes range from 248 homes (C035) to 1,110 homes (C001); the median route has 589 homes. The Census counted 17,045 households in 42104 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–4998
500–74912
750–9995
1,000–1,4991
1,500+0

Best routes in 42104 for…

Most businesses

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

  1. Route R022 — USPS business mailboxes 258, 684 homes
  2. Route C024 — USPS business mailboxes 225, 679 homes
  3. Route C006 — USPS business mailboxes 201, 405 homes
  4. Route C031 — USPS business mailboxes 112, 713 homes
  5. Route C001 — USPS business mailboxes 74, 1,110 homes

Select these 5 routes on the route map

Every carrier route in 42104

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City1,11074$61,519———
C006City405201$41,359———
C007City82122$90,079———
C011City6290$90,079———
C016City4970$36,746———
C018City7253$90,079———
C024City679225$90,079———
C029City85711$55,765———
C031City713112$41,359———
C035City2483$45,322———
C036City58953$36,746———
R003Rural4126$62,504———
R009Rural5126$68,287———
R021Rural7838$79,596———
R022Rural684258$84,304———
R023Rural5662$58,940———
R027Rural4320$128,841———
R031Rural88462$79,596———
R035Rural5390$138,509———
R036Rural5500$138,509———
R037Rural4892$128,841———
R039Rural92720$68,287———
R040Rural71137$128,841———
R047Rural7045$128,841———
R061Rural4934$138,509———
R062Rural47635$80,030———
R063Rural3000$89,913———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 42104 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 42104

Where it ranks

Mail every home in 42104

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) 42104, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 42104 in?
42104 is a Bowling Green, KY mailing address. By land area, 17% lies inside Bowling Green and 2% lies inside Plano; the rest is outside any Census-defined city or community.
What county is 42104 in?
42104 is mostly in Warren County (91% of its land), with smaller parts in Simpson County.
What is the population of 42104?
About 42,076 people (±2,433), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 37,309.
What is the median household income in 42104?
$75,164 (±$5,204), compared with $63,726 for Kentucky as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 42104?
27 USPS carrier routes with 16,735 residential and 1,149 business mailboxes (17,886 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 42104?
The closest, measured center to center: 42122 (5.6 mi, Bowling Green), 42170 (6.7 mi, Woodburn), 42103 (9.3 mi, Bowling Green), 42274 (9.6 mi), 42134 (12.1 mi, Franklin) and 42101 (12.5 mi, Bowling Green).

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