Benign ethnic neutropenia can often lead to unnecessary investigations in healthy individuals. This study describes the presence of the ACKR1 polymorphism within a socially closed Arab community in Israel. Neutrophil counts and genomic DNA of 2 index cases that presented with neutropenia on routine laboratory tests and 32 of their related family members were analyzed. 64.7% of participants were neutropenic (mean neutrophil count 2.35 K/uL) and 95% of the subjects with neutropenia and genomic DNA available carried the ACKR1 null- genotype. This suggests a strong correlation between the two (p < 0. 01). A difference in WBC count was also observed between the homozygous and heterozygous ACKR1 polymorphism sub-groups (5.68 K/uL vs. 8.35 K/uL respectively, p < 0.001).