No, county governments typically do not have a uniform set of procurement procedures that directly mirror the federal simplified acquisition procedures. While federal acquisitions follow the Federal Acquisition Regulation (FAR), state and local government purchasing is governed by state statutes and local ordinances, which can vary significantly from one county to another, and even between different departments within the same county.
For federal contracts, agencies are required to use simplified acquisition procedures for purchases of supplies or services that do not exceed the simplified acquisition threshold, as stated in FAR 13.003(a). Each acquisition above the micro-purchase threshold but not over the simplified acquisition threshold is set aside for small business unless the contracting officer determines otherwise (FAR 19.502-2(a)).
At the local level, each county or municipality will establish its own thresholds and processes for soliciting services. Some may have informal bidding processes or request basic quotes for smaller service contracts, similar to how federal agencies handle acquisitions below the simplified acquisition threshold. Others might require a more extensive proposal even for jobs that are not large. Your best approach is to carefully review the specific procurement rules and vendor guides on each Ohio county's state procurement portal where you plan to bid.