Yes but that advice is divided into two views, those who want to attain nibbana, and those laypeople who seek only a fortunate rebirth. The suttas which deal with advice given to the latter cover secular subjects. AN 8.54 describes how to balance income and expenditure.
“The Aṅguttara includes a notable proportion of suttas addressed to lay followers dealing with the ethical and spiritual concerns of life within the world, including family relationships (husbands and wives, children and parents) and the proper ways to acquire, save, and utilize wealth.”—Bikkhu Bodhi
“And what does it mean to maintain one’s livelihood in tune? There is the case where a lay person, knowing the income and outflow of his wealth, maintains a livelihood in tune, neither a spendthrift nor a penny-pincher, [thinking], ‘Thus will my income exceed my outflow, and my outflow will not exceed my income.’ Just as when a weigher or his apprentice, when holding the scales, knows, ‘It has tipped down so much or has tipped up so much,’ in the same way, the lay person, knowing the income and outflow of his wealth, maintains a livelihood in tune, neither a spendthrift nor a penny-pincher, [thinking], ‘Thus will my income exceed my outflow, and my outflow will not exceed my income.’ If a lay person has a small income but maintains a grand livelihood, it will be rumored of him, ‘This clansman devours his wealth like a fruit-tree eater.’[2] If a lay person has a large income but maintains a miserable livelihood, it will be rumored of him, ‘This clansman will die of starvation.’ But when a lay person, knowing the income and outflow of his wealth, maintains a livelihood in tune, neither a spendthrift nor a penny-pincher, [thinking], ‘Thus will my income exceed my outflow, and my outflow will not exceed my income,’ this is called maintaining one’s livelihood in tune.”
All advice from the Buddha is based on the middle way, just as an individual would not overspend, so if an incoming population was too numerous for the resources of the country, then that would be an unacceptable extreme.