Ecological Infrastructure is a key element of a sustainable urban ecosystem. It is recognized as an effective approach based on the way nature works, being an important source of ecosystem services provided to the population. Green solutions are one of the new tools that can help cities increase resilience and sustainability. The green infrastructure (forest plantations, forests-parks, agricultural land, forest protection strips, etc.), the blue infrastructure (lands under water - swamps, rivers, ponds) were evaluated and compared with the grayinfrastructure (roads, streets and squares, constructions) in cities and rural localities in the Northern Region of the Republic of Moldova. The results show that the spatial share of green infrastructure in the cities of the region with a population of more than 30 thousand inhabitants (Soroca town, Balti town) represents about 40-41% of the total area, the share of gray infrastructure is 50-60%, and of the blue one only 4%. In smaller cities, the share of green infrastructure can reach values of up to 60-70 percent, being strongly influenced by out-of-town spaces. In rural areas, the share of green infrastructure reaches about 80-90%, blue 2-3%, and built 10-12%.