
Spam Risk Caller ID: What It Means and What to Do About It
What "Spam Risk" means on your caller ID and how carriers flag calls.
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Based on US Census data for Madison
31.8 y/o
Median Age
Compared to the US median age of 38.7 y/o
$77K
Median Income
Compared to the US median income of $78.5K
$346.9K
Median Home Value
Compared to the US median home value of $303.4K
275.6K
Madison Population
Compared to the US median city population of 171.9K
Wisconsin's 353 area code is among the newer overlays planned for the south-central part of the state, sharing geography with the long-running 608 across Madison and the surrounding region. Madison — the state capital — anchors the directory's records here. The city sits on a narrow isthmus between Lake Mendota and Lake Monona, organized around the Wisconsin State Capitol, the University of Wisconsin–Madison's main campus, and a substantial cluster of state-government, biotechnology, and healthcare employment. The 353 designation, part of the North American Numbering Plan, is in the early phases of being prepared for active number assignments.
In records the directory has compiled for 353 numbers, other Wisconsin cities — Eau Claire, Green Bay, Kenosha, and Milwaukee — appear regularly. None of those are inside the 353 footprint. The pattern reflects standard public-record dynamics across Wisconsin. The directory's prefix-level holdings for 353 remain in early stages, with current coverage representing the start of working records rather than a comprehensive count of the prefix population the code will eventually carry.
Madison's median age sits well under the US figure, in the low thirties, a pattern shaped heavily by the substantial student population at UW–Madison. Median household income runs close to the national reading, home values come in above the US median in line with broader Madison-area pricing pressure, and population places Madison among the larger cities in Wisconsin. The 353 footprint shares those demographics with 608 because both codes serve south-central Wisconsin in overlapping form.

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