What city is 53578 in?

53578 is a Prairie Du Sac, WI mailing address. By land area, 5% lies inside Lake Wisconsin and 4% lies inside Prairie du Sac; the rest is outside any Census-defined city or community.

What is the population of 53578?

About 6,503 people (±274), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,556.

What is the median household income in 53578?

$105,610 (±$7,859), compared with $77,485 for Wisconsin as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 53578?

5 USPS carrier routes with 2,737 residential and 175 business mailboxes (2,913 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 53578?

The closest, measured center to center: 53583 (4.7 mi, Sauk City), 53951 (7.6 mi, North Freedom), 53560 (8.4 mi, Mazomanie), 53561 (8.5 mi, Merrimac), 53555 (10.7 mi, Lake Wisconsin) and 53913 (12.7 mi, Baraboo).

53578 ZIP Code, Prairie Du Sac, WI

Q: What county is 53578 in?

53578 is mostly in Sauk County (81% of its land), with smaller parts in Columbia County.

53578 is a ZIP code in Prairie Du Sac, Wisconsin — mostly in Sauk County (81% of its land), with smaller parts in Columbia County. It covers 43 square miles of land. The closest ZIP codes are 53583, 53951 and 53560. 6,503 people live here in 2,669 households. With about 151 people per square mile it is lightly settled, and most homes are owner-occupied (76%). Median household income is $105,610, above the Wisconsin median of $77,485.

Quick facts

Mailing city: Prairie Du Sac, WI
County: Sauk County
Land area: 43 sq mi
Population: 6,503
Median household income: $105,610
Carrier routes: 5 (2,737 homes)

Key figures

Measure	Value
Residents	6,503
Households	2,669
Median household income	$105,610
Income per person	$49,645
Median age	42.6
Homeowners	75.6%
Median home value	$347,000
Median rent	$1,357
Bachelor's degree or higher	43.2%
Average commute (minutes)	23.6
Households with kids under 18	27.9%
Moved in the past year	7.3%
Below the poverty line	6.1%
Broadband internet	89.7%
Speak a non-English language at home	5.7%

Household income

% of households	Value
<$10K	0.9%
$10–15K	0.6%
$15–25K	5.6%
$25–35K	3.7%
$35–50K	7.3%
$50–75K	14.3%
$75–100K	12.9%
$100–150K	21.8%
$150–200K	18.8%
$200K+	14.0%

Age

% of all residents	Value
<10	12.6%
10–19	12.8%
20–24	3.2%
25–34	12.6%
35–44	11.5%
45–54	15.3%
55–64	14.4%
65–74	11.2%
75+	6.4%

Tenure

% of housing units	Value
Owned, with mortgage	48.9%
Owned outright	23.6%
Rented	22.8%
Vacant	4.7%

Type of building

% of housing units	Value
Detached house	75.6%
Townhome	4.2%
2–4 units	10.4%
5–19 units	5.8%
20+ units	2.5%
Mobile / other	1.5%

Businesses in 53578

170 business establishments with 2,852 employees (ZIP Codes Business Patterns 2023).

Construction: 27
Health Care and Social Assistance: 27
Retail Trade: 18
Finance and Insurance: 16
Other Services (except Public Administration): 13
Real Estate and Rental and Leasing: 11
Wholesale Trade: 10
Professional, Scientific, and Technical Services: 10

EDDM carrier routes

53578 has 5 USPS carrier routes with 2,737 residential and 175 business mailboxes. Open the EDDM route map.

Carrier routes in 53578

53578 has 5 USPS carrier routes (2 city (C), 3 rural (R)) with 2,737 residential and 175 business mailboxes. Routes range from 411 homes (C002) to 683 homes (R006); the median route has 570 homes. The Census counted 2,669 households in 53578 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	2
500–749	3
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 53578 for…

Most businesses

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

Route R006 — USPS business mailboxes 77, 683 homes
Route C002 — USPS business mailboxes 68, 411 homes
Route R001 — USPS business mailboxes 17, 464 homes
Route R004 — USPS business mailboxes 7, 609 homes
Route C001 — USPS business mailboxes 6, 570 homes

Select these 5 routes on the route map

Every carrier route in 53578

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	570	6	$108,724	—	—	—
C002	City	411	68	$55,399	—	—	—
R001	Rural	464	17	$101,109	—	—	—
R004	Rural	609	7	$108,724	—	—	—
R006	Rural	683	77	$108,724	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 53578 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

53583 — Sauk City village, WI (4.7 mi)
53951 — North Freedom village, WI (7.6 mi)
53560 — Mazomanie village, WI (8.4 mi)
53561 — Merrimac village, WI (8.5 mi)
53555 — Lake Wisconsin CDP, WI (10.7 mi)
53913 — Baraboo city, WI (12.7 mi)
53529 — Dane village, WI (12.9 mi)
53515 — Black Earth village, WI (13.6 mi)

Areas that include 53578

Lake Wisconsin, WI ZIP codes — 3 ZIP codes
Prairie du Sac, WI ZIP codes — 1 ZIP code
Columbia County ZIP codes — 18 ZIP codes
Sauk County ZIP codes — 18 ZIP codes
Wisconsin ZIP code data

Where it ranks

Mail every home in 53578

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) 53578, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 53578 in?: 53578 is a Prairie Du Sac, WI mailing address. By land area, 5% lies inside Lake Wisconsin and 4% lies inside Prairie du Sac; the rest is outside any Census-defined city or community.
What county is 53578 in?: 53578 is mostly in Sauk County (81% of its land), with smaller parts in Columbia County.
What is the population of 53578?: About 6,503 people (±274), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 6,556.
What is the median household income in 53578?: $105,610 (±$7,859), compared with $77,485 for Wisconsin as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 53578?: 5 USPS carrier routes with 2,737 residential and 175 business mailboxes (2,913 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 53578?: The closest, measured center to center: 53583 (4.7 mi, Sauk City), 53951 (7.6 mi, North Freedom), 53560 (8.4 mi, Mazomanie), 53561 (8.5 mi, Merrimac), 53555 (10.7 mi, Lake Wisconsin) and 53913 (12.7 mi, Baraboo).

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