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Posen
City in Illinois, United States
Overview
Posen, Illinois is a quaint village in Cook County, known for its small-town charm, quiet streets, and tight-knit community. Despite its modest population, Posen offers a glimpse into suburban life near Chicago, with easy access to larger amenities in surrounding areas.
Geographic Context
Jurisdiction
United States
State
Illinois
Population
270
Time Zone
America/Chicago
Coordinates
41.63°, -87.68°
Key Metrics
Safety Score · estimate
50
Female Safety
55
LGBTQ+ Safety
55
Traffic Safety
70
Food Safety
90
Monthly Cost · estimate
$1,630
Local Cost
$1,180
Local Income
$2,500
Cashless
90
English
100
Temperature
10.1°C
Summer Avg
22.3°C
Winter Avg
-2.7°C
Record High
39.5°C
Record Low
-31.3°C
Humidity
79%
Precipitation
976 mm
Internet Speed
41 Mbps
Upload
12 Mbps
Latency
23 ms
City Vibrancy
5
Coworking
0
Cafes
0
Nightlife
0
Parks
5
Transport
34
Walk Score
34
Footways
68.0
Airport
MDW
Distance
18 km
Explore
Data sources
Source-backed data
World Air Quality Index - Latest available city-level air quality station measurement. Record updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Record updated 2025-12-08.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Record updated 2025-12-06.
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-23.
Oyster List city price estimates - Price origins are unverified. Available generation methods include AI estimates; stored records do not identify a survey, observation period, or model for each price. Record updated 2026-01-14.
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores include model-assisted estimates. Stored records do not identify supporting observations for each score. Model-reported confidence: 60/100; this is not a measured accuracy score. Model: derived+gpt-4.1. Record updated 2026-03-26.
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