Polk vs Osceola vs Lake: where growth is heading

What is compared, and what is not

Four kinds of figures are on this page, each with its date. Population estimates come from two sources that do not agree to the person: the Census Bureau estimates for July 1, and the University of Florida's Bureau of Economic and Business Research (BEBR) estimates for April 1. The projections are BEBR's and nobody else's. The building permits are the Census Bureau's count for calendar year 2025. The agenda items are the ones Flexway's Development Radar verified, one by one, against each government's own agenda.

Nothing here is a price or a price forecast, and the only projection of anything is the one BEBR prints. A county that adds people is not thereby a county where a given home gains value.

Population today: two sources, two dates

By the Census Bureau's estimate for July 1, 2025, Polk County has 874,790 people, Osceola County 481,718 and Lake County 456,068. By BEBR's estimate for April 1, 2025, they have 846,896, 484,915 and 445,881. Both sources start from the 2020 census; they are separate estimates for different dates, and neither is a count.

BEBR prints the change from the 2020 census to April 1, 2025: 121,850 more people in Polk County, 96,259 more in Osceola County and 61,925 more in Lake County. Among Florida's 67 counties that makes Polk 1st by population change, Osceola 5th and Lake 13th. By percent change the order is different: Osceola is 3rd at 24.8 percent, Polk 11th at 16.8 percent and Lake 13th at 16.1 percent (BEBR, Florida Estimates of Population 2025, Tables 7 and 8).

Where the growth comes from

In all three counties the growth is people moving in. BEBR attributes 99.7 percent of Polk County's change from 2020 to 2025 to net migration, 91.1 percent of Osceola County's and 100.0 percent of Lake County's, where deaths outnumbered births by 8,315 over the period (BEBR, Table 2).

The Census Bureau's file for the year ending July 1, 2025 shows where the movers came from. Polk County's net domestic migration was 18,752 and its net international migration 3,722. Lake County's was 12,230 domestic and 1,512 international. Osceola County's was 7,272 domestic and 6,503 international, and Osceola County had the largest natural change of the three, 2,112 more births than deaths (U.S. Census Bureau, Vintage 2025 county totals).

What BEBR projects to 2050

BEBR's Bulletin 203, of February 2026, projects each county's population for April 1 of 2030, 2035, 2040, 2045 and 2050, in a low, a medium and a high series. Its medium series puts Polk County at 936,600 in 2030 and 1,138,900 in 2050, Osceola County at 562,900 and 754,900, and Lake County at 499,100 and 626,000.

BEBR says how to read them. On the series to use: “We recommend using the medium series for most purposes; this series has historically provided the most accurate forecasts for Florida counties.” On the low and high series: “These should not be considered low and high growth scenarios; rather, they represent an indication of the uncertainty surrounding the medium projections.” And on who is counted: “these projections refer solely to the resident population of Florida; they do not include temporary or seasonal residents whose usual place of residence is in another jurisdiction.”

This guide adds no projection of its own. Where BEBR's table stops, at 2050 and at the county line, so does this page: BEBR's bulletin projects counties, not cities.

Homes authorized in 2025

The Census Bureau's Building Permits Survey counts the housing units that local permit offices authorized. Its annual file for 2025 shows 6,725 single-family units authorized in Polk County, 5,085 in Osceola County and 3,999 in Lake County. In buildings of five or more units the order changes: 2,255 units in Osceola County, 1,336 in Polk County and 1,247 in Lake County. The file prints units by size of building and no total, and this guide adds none.

On the agendas: 114 items in three editions for each county

The Development Radar is Flexway's monthly digest of what local governments are about to discuss. An item enters an edition only after it has been checked against the government's own agenda: the link has to open, and the item's status has to appear on that agenda word for word. Each of the three counties has three editions so far, for July, August and September 2026. Together they list 114 items: 67 in Polk County, 24 in Osceola County and 23 in Lake County, from meetings that the editions date from May 18 to September 24, 2026.

The three numbers are not a ranking, because the editions do not carry the same number of governments in each county. Polk County's carry items from five: the county's own boards, Haines City, Lake Wales, Dundee and, once, Auburndale. Osceola County's carry items from three: Kissimmee, St. Cloud and the county, whose own boards appear only in the July edition. Lake County's carry items from two: Clermont and the county. A government with no item here is not a place where nothing happened: an edition lists the items that were verified, not everything that was on an agenda.

An item is a line on an agenda: a hearing, a reading or a vote that was scheduled. It is not an approval, and it is not construction. An item is counted each time an edition lists it, so a project on three agendas is three items, and two Dundee items from one agenda are listed in two editions. By the Polk County editions' own count, 11 of that county's 67 listings are matters carried over from the edition before. Each item has one type, by the rule set out in the Polk County guide linked below. One type could be read two ways: Lake County's ordinance for a temporary moratorium on data center facilities is counted here as rules text; the edition does not say that the ordinance amends the county's code, and it could be read as agreement or other. Counted that way, Lake County would have 3 items of rules text and 5 of agreement or other, and the three counties 28 and 9.

What the types show is that the governments in the editions had different kinds of items before them. In Polk County the largest type is changes to the land use map (24 of 67), followed by changes to the text of the rules (22). In Osceola County the largest type is rezonings and planned developments (11 of 24), followed by changes to the land use map (5). In Lake County the largest type is permits for a single use, conditional uses and variances (6 of 23), followed by changes to the land use map (5).

Polk County: the county's own agenda, and four cities

Forty of Polk County's 67 items were before the county's own boards, and most of those change the land use map or the rules. The largest by area is listed as Mims Crossing: the setting of hearings on changing ±1,261 acres from Phosphate Mining to Industrial. In the cities, Lake Wales has two annexation requests, of 164± and 193± acres, and Dundee, a town the Census Bureau estimates at 6,424 people, has twelve items. Haines City has six items and the population figure: the Census Bureau ranks it 6th among the 15 fastest-growing U.S. cities and towns of 20,000 or more for the year to July 1, 2025 (U.S. Census Bureau, release of May 14, 2026; the Dundee estimate is from its Vintage 2025 file for incorporated places).

Osceola County: St. Cloud's planned developments

Seventeen of Osceola County's 24 items are St. Cloud's. Two planned developments account for six of them: the Avancia PUD, formerly Neptune Village, and the Walker Property PUD of roughly 25.59 acres are each on three agendas, from first reading in July to final hearing in September. Two future land use changes are each on two agendas: roughly 46.11 acres to Institutional for a Public Safety Complex, and roughly 27.26 acres to Park/Open Space at Rothstein Memorial Park. The city's agendas also carry two preliminary subdivision plans for commercial tracts, an ordinance on accessory dwelling units, and a development agreement for a mixed-use project in its downtown redevelopment district.

The county's own three items are all in the July edition, and two are large. One is a county-initiated amendment that would change the future land use map of roughly 413.85 acres near East Irlo Bronson Memorial Highway, listed as the Partin Settlement area. The other rezones roughly 85.41 acres to Commercial Tourist with the Sedona Ridge preliminary subdivision of 392 lots. Kissimmee has four items: a rezoning on Fortune Road to a residential planned unit development; an item of final readings that carries it again, with a change of zoning on Hoagland Road from Short-Term Rental PUD and Mixed-Use PUD to Agricultural Conservation; and two items of code text on signs and conditional uses.

Lake County: Clermont, and a moratorium

Seventeen of Lake County's 23 items are Clermont's. Two subdivisions each bring a land use change and a rezoning: Hammock Pointe/Reserve, a large-scale amendment, and Louisa Grande, a small-scale one west of the Hidden Court and US Hwy 27 intersection, which is on three agendas. Six items are permits for a use: conditional use permits for two veterinary clinics and for a mixed-use development with 12 or more dwelling units in the Central Business District, listed as West End Plaza, two of the three on the agendas of both the Planning and Zoning Commission and the City Council; and one item of four variance requests for the Green Mountain Subdivision. Two items are an ordinance establishing a Community Development District for the Sanctuary at Wellness Ridge subdivision.

The county's own six items are about rules and roads. The agenda of August 25 lists the first public hearing of an ordinance establishing a temporary moratorium on the construction or expansion of data center facilities in the unincorporated areas of Lake County. The agenda of June 9 recommends replacing a construction agreement with the Central Florida Expressway Authority: the county would reimburse the Authority $16,348,714.42, spread over 20 years, for a portion of the Lake/Orange Expressway Project. The agenda of September 22 recommends a contract for construction, engineering and inspection services for Hartwood Marsh from US27 to Majestic Isle Drive.

What this comparison cannot tell you

It cannot tell you where to buy. The population figures say how many people each county holds and how fast that changed; the projections are BEBR's estimate of the resident population, with the uncertainty BEBR itself describes; the permits say what was authorized, not what was built or sold; and the agenda items say what three sets of governments scheduled between May and September 2026. None of them is a price, and this guide predicts none.

It also cannot compare the counties' agendas number for number, for the reason given above: the editions carry five governments in one county and two in another. What it can do is show the kind of decision each was making, and let anyone check every item, because each edition links each item to its official agenda.