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Determining the demographics of the Galactic planetary nebula (PN) populationis an important goal to further our understanding of this intriguing phase ofstellar evolution. The Galactic population has more than doubled in number overthe last 15 years, particularly from narrowband \ha\ surveys along the plane.In this review I will summarise these results, with emphasis on the timeinterval since the last IAU Symposium. These primarily optical surveys are notwithout their limitations and new surveys for PNe in the infrared similarlyface a number of challenges. I will discuss the need for multi-wavelengthapproaches to discovery and analysis. The desire to have accuratevolume-limited samples of Galactic PNe at our disposal is emphasised, whichwill be impacted with new data from the Gaia satellite mission. We need robustsurveys of PNe and their central stars, especially volume-limited surveys, inorder to clarify and quantify their evolutionary pathways.

Challenges faced by current Galactic planetary nebula surveys