Choose the geography, reporting year, industry definition and business coverage before using an industry statistic. Public establishment data, household data and completed transaction prices answer different questions.
Know what an establishment count includes
Census County Business Patterns is an establishment-data program with a defined scope. Verify the industry classification, employer coverage, geography, suppression and reporting year before calling a count the number of operating washes. Sites attached to another primary business may be represented differently.
This page publishes no statewide facility count, revenue total or transaction-price average. Earlier unsupported figures should not be reused in a business pitch or acquisition model. Use the original table and its methodology when a specific statistic is needed.
Keep household and business measures distinct
QuickFacts provides demographic context for selected geographies. Population, income and vehicle/customer behavior are not interchangeable measures. A city average does not establish the trade area of a particular wash.
Choose the relevant area, note the data vintage and compare it with the site’s actual paid customers where properly available. Do not calculate wash revenue by multiplying a population count by an unsupported capture rate.
Use traffic data as an observation aid
IDOT’s traffic resources help identify roadway movement and the count period. A roadway volume is not the number of vehicles that can conveniently enter the site. Observe turns, queues and competing stops before treating traffic as accessible demand.
Record limitations and source dates beside every statistic used in a plan. A useful research note tells the reader what was counted and what cannot be inferred from it.
Sources & evidence
- U.S. Census Bureau: County Business Patterns
Establishment data and scope; not a complete site inventory or transaction-price dataset. - U.S. Census Bureau: Illinois QuickFacts
Choose the relevant city or county and note the data vintage; not car-wash demand. - IDOT: annual average daily traffic
Road traffic counts and maps; not wash visits or customer conversion.
Links checked for this editorial pass on October 14, 2026. General reference material does not establish a site’s revenue, value or eligibility. Examples are illustrative where labeled.
Continue your preparation
- Selecting an Illinois car wash site
- Buying an Illinois wash from out of state
- Confirming use and permits for an Illinois car wash
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