This is the first assessment of its kind to document ACS CAPI language needs over a three-year span of full sample size, and is meant to provide the regional offices with information that will be valuable in making recruitment and hiring decisions. For each regional office and each year, two sets of monthly CAPI language workloads were estimated. The first set estimates the number of households in CAPI each month that may have a general language need or preference for a given language (language workloads), while the second set estimates the number of households in CAPI each month that are likely to have a critical language need (linguistically isolated language workloads). For each regional office, these estimated workloads by language are compared with the number of field representatives in that office that are available to conduct interviews in a particular language. Although a regional office'€™s linguistically isolated language workload is, on average, less than ten percent of its household language workload, analyzing the needs of linguistically isolated households and making language assistance services available to them are critical for obtaining quality data in the ACS. Major findings:

• After Spanish, there is no top linguistically isolated household language shared among all of the regional offices. Languages that are dominant in one regional office are not necessarily dominant in another.
• Linguistically isolated language workloads were fairly stable over this 3-year period, except for increases in the Spanish linguistically isolated language workloads of the Atlanta and Dallas regional offices.
• The regional offices have hired field representatives with the necessary language skills to accommodate their unique linguistically isolated language workloads.