In compost bedding pack (CBP) dairy barns, milk yield (MY) and cow stocking density (CSD) are key economic indicators, but others such as milk yield per square meter (MYSM) could be also of interest. Our aim was to study the association among MY (kg/d), CSD (m²/cow) and MYSM (kg/m²). From January to December 2018, data from 2 CPB dairy barns (Córdoba, Argentina), one with concrete feed alleys (LD Dairy) and the other without (AT Dairy), was collected daily, Both CBP barns were tilled 2×/d using a tractor with deep tiller and rototiller but cows were milked 3×/d at AT and 2×/d at LD. The CSD was calculated as total barn area (AT = 3960 m² and LD = 3672 m²) divided the number of lactating dairy cows (AT = 286 ± 14 and LD = 287 ± 13) by barn. The MYSM was estimated dividing MY by CSD. We ran Pearson correlations and regression analysis using Dummy variables between MYSM with MY and MYSM with CSD. MY and CSD for AT and LD averaged (±SE) 39.83 ± 5.42 and 30.87 ± 2.65 kg/d, and 13.88 ± 0.70 and 12.77 ± 0.56 m²/cow, respectively. Therefore, MYSM averaged (±SE) 2.87 ± 0.40 and 2.42 ± 0.18 kg/m² for AT and LD, respectively. Pearson correlation between MSYM and MY was positive (r = 0.93 for AT and r = 0.86 for LD; P < 0.01). Linear regression analysis showed significant relationship (R² = 0.89; P < 0.01) between MYSM and MY (MYSM = 0.13 + 0.07 MY in AT; YMYSM = 0.58 + 0.06 MY in LD). Pearson correlation between MYSM and CSD was negative (r = −0.24 for AT and r = −0.05 for LD), but only significant for AT (P < 0.01). Linear regression analysis showed significant relationship (R² = 0.38; P < 0.01) between MYSM and CSD (MYSM = 4.80–0.14 CSD for AT; MYSM = 2.62–0.02 CSD for LD). Our data shows that MYSM is affected more by MY than by CSD.