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Lake Delton village, WI

ZIP Code 53940 — Lake Delton village, WI Demographics & Data

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Map, Quick Facts & Location

Quick Facts

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City
Lake Delton village
County
Sauk County
WI
Timezone
CST(America/Chicago)
Area Code
608
Congress
WI-2
DMA
MADISON (669)
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Location
Coordinates
44.2685, -89.6165
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Overview of ZIP Code 53940

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What to know about ZIP 53940

ZIP code 53940 covers Lake Delton, WI in Sauk County.

It sits in telephone area code 608; U.S. House district WI-2; the MADISON media market.

Climate risk and migration signals

FEMA’s National Risk Index rates natural-hazard risk for Lake Delton village, WI as Relatively Low (composite score 72.1), which is elevated versus much of the country. The strongest component scores on US5 are flood (77.5) and wildfire (27.2). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Lake Delton village, WI show limited published climate normals on US5.