1. Define a Matteson service area without treating population as demand
The Census identifies Matteson village as a municipality in Cook County and records a 2020–2024 ACS five-year population estimate of 18,645. That gives your firm a clear place-based starting point, but it does not establish how many people search for a lawyer, how many firms compete for attention, or how many inquiries Local Services Ads could produce. It also does not decide whether your firm should target only Matteson or additional areas it already serves. Bosseo’s public Local Services Ads page says its program includes practice-area categories and service areas set deliberately. That makes geographic definition a practical eligibility and budget question rather than a population-based forecast.
Recommended approach
List the locations your firm actually serves, then compare that list with the service areas available in the Local Services Ads profile. Decide whether Matteson belongs in a focused area, a broader Cook County configuration, or a separate test. Keep the decision tied to licensing, travel, office coverage, consultation capacity, and the case types you accept. Do not use the 18,645 estimate as a forecast.
