By law, the County's redistricting maps must use census data including Census Designated Places (CDPs.) Since the U.S. Census Bureau established Crane Creek, Yosemite West, and Mt. Bullion as new CDPs in the county this census cycle, the County is obligated to recognize them on the maps.
Unfortunately, the County has no authority to correct any census data. However, U.S. Census Bureau Complaint procedures can be found online at: https://www.census.gov/about/policies/quality/corrections.html