New HST/WFPC2 imaging of the dwarf starburst galaxy NGC 625 is presented .
These data , which are 80 % complete to V and I magnitudes of 26.0 and 25.3 respectively , allow us to study the recent star formation history of NGC 625 .
Using outlying red giants stars , we derive a tip of the red giant branch ( TRGB ) distance modulus of 27.95 \pm 0.07 .
This corresponds to a distance of 3.89 \pm 0.22 Mpc , placing this system on the far side of the Sculptor Group .
NGC 625 has a well-defined radial stellar population gradient , evidenced by a central concentration of young main sequence stars and an RGB/AGB ratio that increases with galactocentric distance .
The prominent AGB is very red , similar to the population found in the Local Group dIrr NGC 6822 .
The RGB stars can be detected out far from the central star forming activity and show an elliptical distribution in agreement with the galaxy ’ s outer H i distribution .

Using H \alpha and H \beta narrow band imaging and previous optical spectroscopy we identify substantial and varying internal extinction associated with the central active star formation regions .
This extinction , which varies from A _ { V } = 0.0 to 0.6 magnitudes , hampers efforts to derive a detailed recent star formation history .
To better understand the effects of internal extinction on the analysis of young stellar populations , synthetic models are presented which , for the first time , examine and account for this effect .
Using the luminous blue helium burning stars , we construct a simple model of the recent ( < 100 Myr ) star formation in which an elevated but declining star formation rate has been present over this entire period .
The is at odds with the presence of spectroscopic W - R features in the major star formation region which imply a short duration ( \leq 5 Myr ) for the recent starburst .
This suggests that starbursts displaying W - R features are not necessarily all of a short duration .
Finally , we speculate on the possible causes of the present burst of star formation in this apparently isolated galaxy , and compare it to other nearby , well-studied dwarf starburst systems .