Demographics & People — Storm Lake, Iowa
Population Overview
| Population (Census) | 11,275 |
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| Estimated 2026 | ~11,800 |
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| Median Age | 30.9 |
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| Total Households | 4,009 |
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| Family Households | 2,242 |
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| Average Household Size | 2.61 |
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| Diversity Index | 0.6275 (highly diverse) |
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Race & Ethnicity
| White | 5,970 |
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| Black or African American | 424 |
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| Asian | 1,674 |
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| Hispanic or Latino | 4,618 |
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Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 6,138 |
| Hispanic: Hispanic or Latino | 4,420 |
| Hispanic: Mexican | 3,202 |
| Unclassified or not reported | 2,184 |
| German | 1,659 |
| Hispanic: Central American | 645 |
| Irish | 388 |
| Hispanic: Cuban | 365 |
| Hispanic: Salvadoran | 325 |
| English | 301 |
Language
| English Only | 4,945 |
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| Spanish | 3,677 |
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| Population 5+ | 10,444 |
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Veterans
| Veterans | 200 |
|---|
| Population 18+ | 8,180 |
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Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Storm Lake, Iowa.
