What city is 42431 in?

42431 is a Madisonville, KY mailing address. By land area, 11% lies inside Madisonville; the rest is outside any Census-defined city or community.

What is the population of 42431?

About 27,207 people (±908), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 26,566.

What is the median household income in 42431?

$54,905 (±$4,964), 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 42431?

23 USPS carrier routes with 11,646 residential and 1,068 business mailboxes (12,735 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 42431?

The closest, measured center to center: 42410 (4.7 mi, Earlington), 42440 (6.8 mi, Mortons Gap), 42413 (7 mi, Hanson), 42436 (7.3 mi, Manitou), 42344 (9.8 mi) and 42441 (10.1 mi, Nebo).

42431 ZIP Code, Madisonville, KY

42431 is a ZIP code in Madisonville, Kentucky in Hopkins County. It covers 167 square miles of land. The closest ZIP codes are 42410, 42440 and 42413. 27,207 people live here in 11,270 households, more than in 9 of every 10 Kentucky ZIP codes. With about 163 people per square mile it is lightly settled, and owners and renters are mixed (67% own). Median household income is $54,905, below the Kentucky median of $63,726.

Quick facts

Mailing city: Madisonville, KY
County: Hopkins County
Land area: 167 sq mi
Population: 27,207
Median household income: $54,905
Carrier routes: 23 (11,646 homes)

Key figures

Measure	Value
Residents	27,207
Households	11,270
Median household income	$54,905
Income per person	$29,753
Median age	40.2
Homeowners	66.5%
Median home value	$160,700
Median rent	$850
Bachelor's degree or higher	20.1%
Average commute (minutes)	18.5
Households with kids under 18	31.8%
Moved in the past year	16.3%
Below the poverty line	22.2%
Broadband internet	91.9%
Speak a non-English language at home	3.9%

Household income

% of households	Value
<$10K	9.4%
$10–15K	5.7%
$15–25K	9.4%
$25–35K	8.1%
$35–50K	12.4%
$50–75K	17.7%
$75–100K	13.4%
$100–150K	14.4%
$150–200K	6.7%
$200K+	2.8%

Age

% of all residents	Value
<10	12.8%
10–19	13.6%
20–24	5.7%
25–34	12.5%
35–44	10.2%
45–54	13.3%
55–64	12.0%
65–74	12.5%
75+	7.3%

Tenure

% of housing units	Value
Owned, with mortgage	30.2%
Owned outright	29.0%
Rented	29.5%
Vacant	11.3%

Type of building

% of housing units	Value
Detached house	76.3%
Townhome	1.0%
2–4 units	8.8%
5–19 units	6.4%
20+ units	0.5%
Mobile / other	6.9%

Businesses in 42431

707 business establishments with 11,921 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 123
Health Care and Social Assistance: 121
Other Services (except Public Administration): 91
Accommodation and Food Services: 64
Finance and Insurance: 53
Professional, Scientific, and Technical Services: 50
Construction: 41
Wholesale Trade: 35

EDDM carrier routes

42431 has 23 USPS carrier routes with 11,646 residential and 1,068 business mailboxes. Open the EDDM route map.

Carrier routes in 42431

42431 has 23 USPS carrier routes (13 city (C), 10 rural (R)) with 11,646 residential and 1,068 business mailboxes. Routes range from 137 homes (C017) to 649 homes (C010); the median route has 521 homes. The Census counted 11,270 households in 42431 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	2
250–499	9
500–749	12
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 42431 for…

Most businesses

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

Route C007 — USPS business mailboxes 176, 192 homes
Route C013 — USPS business mailboxes 109, 521 homes
Route C005 — USPS business mailboxes 106, 429 homes
Route C001 — USPS business mailboxes 81, 401 homes
Route R011 — USPS business mailboxes 70, 593 homes

Select these 5 routes on the route map

Every carrier route in 42431

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	401	81	$53,637	—	—	—
C002	City	626	32	$53,637	—	—	—
C003	City	597	6	$67,688	—	—	—
C004	City	619	47	$75,288	—	—	—
C005	City	429	106	$42,707	—	—	—
C006	City	492	4	$54,040	—	—	—
C007	City	192	176	$67,688	—	—	—
C010	City	649	32	$47,916	—	—	—
C011	City	465	65	$67,688	—	—	—
C012	City	630	9	$50,479	—	—	—
C013	City	521	109	$35,965	—	—	—
C016	City	411	31	$38,242	—	—	—
C017	City	137	15	$38,242	—	—	—
R001	Rural	617	13	$62,061	—	—	—
R002	Rural	550	24	$71,225	—	—	—
R003	Rural	431	64	$75,288	—	—	—
R004	Rural	462	17	$75,476	—	—	—
R005	Rural	615	23	$48,052	—	—	—
R006	Rural	616	31	$53,202	—	—	—
R007	Rural	485	4	$69,267	—	—	—
R008	Rural	609	53	$69,267	—	—	—
R010	Rural	499	56	$44,056	—	—	—
R011	Rural	593	70	$75,288	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 42431 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

42410 — Earlington city, KY (4.7 mi)
42440 — Mortons Gap city, KY (6.8 mi)
42413 — Hanson city, KY (7 mi)
42436 — Manitou CDP, KY (7.3 mi)
42344 (9.8 mi)
42441 — Nebo city, KY (10.1 mi)
42442 — Nortonville city, KY (10.9 mi)
42325 — Bremen city, KY (11.4 mi)

Areas that include 42431

Where it ranks

Mail every home in 42431

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) 42431, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 42431 in?: 42431 is a Madisonville, KY mailing address. By land area, 11% lies inside Madisonville; the rest is outside any Census-defined city or community.
What county is 42431 in?: 42431 is in Hopkins County.
What is the population of 42431?: About 27,207 people (±908), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 26,566.
What is the median household income in 42431?: $54,905 (±$4,964), 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 42431?: 23 USPS carrier routes with 11,646 residential and 1,068 business mailboxes (12,735 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 42431?: The closest, measured center to center: 42410 (4.7 mi, Earlington), 42440 (6.8 mi, Mortons Gap), 42413 (7 mi, Hanson), 42436 (7.3 mi, Manitou), 42344 (9.8 mi) and 42441 (10.1 mi, Nebo).

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